Casting DossierEMBER20 · DEVELOPMENT · THE WEEK JUNIOR
Who hosts TWJ NOW!
This is a decision tool to help us pick one host for TWJ NOW!, our weekly kids' news video show (about 24 episodes a season). We compared eighteen possible hosts in two ways: a scorecard that rates each person out of 100, and a SWOT — a short list of everyone's Strengths, Weaknesses, Opportunities, and Threats. The key idea to keep in mind: the host with the most followers isn't automatically the best choice. What matters more is whether someone is genuinely good at hosting, feels right for kids and for the news, and is trusted by parents and the buyers who fund the show. Once the famous-for-being-famous celebrities are set aside, the names that rise to the top are people who already work in kids' or educational media.
01
The numbers
Total social following and estimated earned-media value (EMV), sorted by reach. EMV is a directional annual estimate — order-of-magnitude, not a media-plan number.
| Candidate | Total reach | Platform mix | Est. annual EMV | Audience skew |
|---|
| Mark RoberEx-NASA/Apple engineer · CrunchLabs | ~85M | YouTube ~78M · IG ~3.9M · TikTok ~3M | Very high
~$8–15M equiv. | Kids + STEM, global |
| Jack BlackSchool of Rock · Kung Fu Panda · Minecraft Movie | ~20M+ | IG ~17M · YouTube · TikTok | Very high
~$5–10M equiv. | Kids + family, films |
| Kristen BellFrozen's Anna · The Good Place · Veronica Mars | ~16M+ | IG ~15.5M · TikTok | High
~$4–7M equiv. | Family / parents |
| Mayim BialikNeuroscientist (PhD) · ex-Jeopardy! host | ~10M+ | IG ~5M · TikTok ~4.6M · podcast/YT | High
~$3–5M equiv. | Family / parents |
| Julian Shapiro-BarnumCreator/host, Recess Therapy | ~7.2M | IG ~3.2M · TikTok ~2.7M · YT ~1.3M | High
~$3–6M equiv. | Kids + co-viewing |
| Xochitl GomezDWTS champ · Marvel's America Chavez | ~4–6M | IG ~2M · TikTok · YouTube | High
~$2–4M equiv. | Tween/teen, Gen Z |
| Steve BurnsOriginal host, Blue's Clues · "Alive" podcast | ~4M | TikTok ~3.6M · IG several hundred K | High per touch
~$2–4M equiv. | Nostalgic millennial parents |
| LeVar BurtonReading Rainbow · 12 Daytime Emmys | ~2–3M | IG ~583K · X large · FB ~431K | High
~$3–5M equiv. | Multigenerational, literacy |
| Emily Calandrelli"The Space Gal" · MIT engineer · Netflix host | ~1–3M | IG ~1M · TikTok · Science Lab YT | Moderate–high
~$1–3M equiv. | Kids + family STEM |
01
The numbers (continued)
| Candidate | Total reach | Platform mix | Est. annual EMV | Audience skew |
|---|
| Kenan ThompsonSNL · All That / Kenan & Kel (Nickelodeon) | ~1M | IG ~1M · broadcast | High
~$2–4M equiv. | Family / kids'-TV legacy |
| Mr. DeMaioTeacher · comedic STEM YouTuber for kids | ~0.4M | YouTube ~356–550K · ~2M views/mo · IG ~8K | Low–moderate
~<$1M equiv. | Elementary kids + teachers |
| Phil TorresEntomologist · Expedition X host · ex-Bill Nye | ~0.3M+ | IG ~272K · TikTok | Moderate
~$1–2M equiv. | Family science / nature |
| Mo RoccaCBS Sunday Morning · Wait Wait · Mobituaries | ~16K personal | IG ~16K · institutional broadcast | Moderate
~$1–2M equiv. | Educated adults |
| Faith SalieCBS Sunday Morning · NPR Wait Wait | ~6K personal | IG ~6.3K · institutional broadcast | Institutional
~$1–2M equiv. | Educated adults / public-media |
| Kai RyssdalHost, Marketplace (APM) · Make Me Smart | modest personal | X presence · Marketplace daily reach | Moderate / inst.
~$1–2M equiv. | Adults / public-media |
| Jed KimFormer host, Smash Boom Best · ex-Marketplace | negligible | APM kids' podcast audience | Low / inst.
~<$1M equiv. | Kids 6–12, the bullseye |
| Molly BloomCo-creator/host, Brains On! (now indie owner) | negligible | ~246K annual podcast listeners | Low / inst.
~<$1M equiv. | Kids 6–12, the bullseye |
| Sanden TottenCo-creator, Brains On! & Forever Ago (indie) | negligible | APM kids' podcast audience | Low / inst.
~<$1M equiv. | Kids 6–12, the bullseye |
02
How to weight them
Seven factors, weighted to what moves the needle for a trusted kids'-news franchise. Reach and EMV together are only 25% of the model; fit, craft, and trust carry the rest.
20
Audience fit
Does the following actually map to TWJ's 8–14 kid + family target?
20
Format fit
Host / interview craft for a news-roundup desk over a 24-episode season.
15
Brand & tonal safety
Appropriateness and reliability for a trusted children's-news brand.
15
Total reach
Raw owned audience the host brings to launch.
10
Earned-media multiplier
Press and viral lift each appearance generates beyond paid reach.
10
Parent / buyer trust
Credibility with the gatekeepers and the people writing the check.
10
Availability & cost
Realistic to sign, afford, and hold for a weekly cadence.
03
The weighted scorecard
All eighteen candidates scored across the seven factors (1–5 per factor, summed to /100). Top six highlighted. Ranks 1–9 shown here.
| Weighted scorecard | Audience fit · 20 | Format fit · 20 | Brand safety · 15 | Reach · 15 | EMV mult. · 10 | Trust · 10 | Avail./cost · 10 | Weighted total / 100 |
|---|
| #1 Emily Calandrelli | 5 | 5 | 5 | 3 | 4 | 5 | 4 | 90
|
| #2 Julian Shapiro-Barnum | 5 | 5 | 4 | 3 | 4 | 4 | 3 | 83
|
| #2 LeVar Burton | 4 | 5 | 5 | 2 | 5 | 5 | 3 | 83
|
| #4 Molly Bloom | 5 | 5 | 5 | 1 | 2 | 5 | 5 | 82
|
| #5 Jed Kim | 5 | 5 | 5 | 1 | 2 | 4 | 5 | 80
|
| #6 Mr. DeMaio | 5 | 4 | 5 | 2 | 2 | 5 | 4 | 79
|
| #7 Mark Rober | 4 | 3 | 5 | 5 | 4 | 5 | 1 | 78
|
| #7 Steve Burns | 3 | 4 | 5 | 3 | 5 | 5 | 3 | 78
|
| #9 Kenan Thompson | 4 | 4 | 5 | 2 | 4 | 5 | 3 | 77
|
03
The weighted scorecard (continued)
Ranks 10–18.
| Weighted scorecard | Audience fit · 20 | Format fit · 20 | Brand safety · 15 | Reach · 15 | EMV mult. · 10 | Trust · 10 | Avail./cost · 10 | Weighted total / 100 |
|---|
| #10 Faith Salie | 3 | 5 | 5 | 1 | 3 | 5 | 5 | 76
|
| #10 Sanden Totten | 5 | 4 | 5 | 1 | 2 | 4 | 5 | 76
|
| #10 Kristen Bell | 5 | 3 | 4 | 4 | 4 | 4 | 2 | 76
|
| #13 Phil Torres | 4 | 4 | 5 | 2 | 3 | 4 | 4 | 75
|
| #14 Mo Rocca | 3 | 5 | 5 | 1 | 3 | 5 | 4 | 74
|
| #15 Mayim Bialik | 4 | 4 | 3 | 4 | 4 | 4 | 2 | 73
|
| #15 Jack Black | 5 | 3 | 3 | 4 | 5 | 4 | 1 | 73
|
| #17 Kai Ryssdal | 3 | 5 | 5 | 1 | 3 | 5 | 3 | 72
|
| #18 Xochitl Gomez | 4 | 3 | 4 | 3 | 4 | 3 | 3 | 69
|
04
Estimated cost per host
Directional planning estimates only (not quotes), at 24 episodes per season. Tier 1 = premium · Tier 2 = mid · Tier 3 = value. Sorted by season cost.
| Host | Per episode | Per season (×24) | Tier |
|---|
| Mark Rober | $20,000 | $480,000 | Tier 1 · Premium |
| Jack Black | $20,000 | $480,000 | Tier 1 · Premium |
| Kristen Bell | $20,000 | $480,000 | Tier 1 · Premium |
| Kenan Thompson | $20,000 | $480,000 | Tier 1 · Premium |
| LeVar Burton | $20,000 | $480,000 | Tier 1 · Premium |
| Mayim Bialik | $10,000 | $240,000 | Tier 2 · Mid |
| Steve Burns | $10,000 | $240,000 | Tier 2 · Mid |
| Mo Rocca | $10,000 | $240,000 | Tier 2 · Mid |
| Kai Ryssdal | $10,000 | $240,000 | Tier 2 · Mid |
| Xochitl Gomez | $7,500 | $180,000 | Tier 2 · Mid |
| Faith Salie | $7,500 | $180,000 | Tier 2 · Mid |
| Julian Shapiro-Barnum | $5,000 | $120,000 | Tier 3 · Value |
| Emily Calandrelli | $5,000 | $120,000 | Tier 3 · Value |
| Phil Torres | $5,000 | $120,000 | Tier 3 · Value |
| Molly Bloom | $5,000 | $120,000 | Tier 3 · Value |
| Sanden Totten | $4,000 | $96,000 | Tier 3 · Value |
| Mr. DeMaio | $2,500 | $60,000 | Tier 3 · Value |
| Jed Kim | $2,500 | $60,000 | Tier 3 · Value |
Candidate SWOTs
Emily Calandrelli #1 overall"The Space Gal" · MIT aerospace engineer · Netflix host
~1–3M · 90/100
Strengths
- The rare kid-STEM-native host with real credentials — Emily's Wonder Lab (Netflix), Science Lab (YouTube), NYT-bestselling books, Emmy-nominated.
- "100th woman in space" — a fresh, press-ready story.
- Clean, inspiring role-model brand; loved by educators and parents.
Weaknesses
- Mid-tier reach (~1–3M) — an audience, not a mega-launch.
- Science framing could read narrow for general news.
Opportunities
- "A real engineer explains the week" is credible and ownable.
- Existing kids'-science ecosystem and schools to cross-promote.
Threats
- Needs framing as a generalist host, not just science.
- Rising profile means her quote will climb — lock terms early.
Julian Shapiro-BarnumCreator & host, Recess Therapy
~7.2M · 83/100
Strengths
- Format-native — the best kid interviewer working, exactly the man-on-the-street register a kids' news desk wants.
- Cites Mister Rogers & Jim Henson as north stars; values match TWJ.
- Genuine co-viewing: kids and parents watch together.
Weaknesses
- Brand equity lives partly in the Recess Therapy IP (Doing Things Media).
- His instinct is conversation and comedy, not news literacy.
Opportunities
- Building "Outside Tonight" — proof he can scale a hosted format; Penguin Random House book incoming.
Threats
- Walked from a past Recess Therapy TV adaptation — guards creative control; focus split across his own empire.
Candidate SWOTs
LeVar BurtonReading Rainbow (23 yrs) · 12 Daytime Emmys · Peabody
~2–3M · 83/100
Strengths
- The trusted-kids'-education icon — off-the-charts parent/educator trust and earned-media halo.
- Lifelong host: Reading Rainbow, LeVar Burton Reads, Sound Detectives, now Trivial Pursuit.
- Literacy and anti-book-banning advocate — squarely on kids' side.
Weaknesses
- Modest social (~2–3M) for his fame; 8–14 recognition softer than his legacy with parents.
Opportunities
- "LeVar reads you the world" bridges literacy to news literacy; natural multigenerational co-viewing.
Threats
- Reading Rainbow IP owned elsewhere — brand must come from LeVar. Busy and iconic = premium cost.
Molly BloomCo-creator/host, Brains On! · now independent owner
negligible personal · 82/100
Strengths
- The format IS TWJ NOW! — her weekly kid-co-host model is exactly the show. Deepest kids'-science craft on the board.
- Brains On is the #2 podcast among under-12s; research-backed, award-winning, deep educator trust.
Weaknesses
- Near-zero personal social — no reach tailwind; unknown to the general public/buyers.
Opportunities
- Just went independent (bought Brains On from APM, late 2025) — audience-supported and hungry to grow.
Threats
- Now owns adjacent kids' IP — alignment to navigate; a producer-host, not a marquee draw.
Candidate SWOTs
Jed KimFormer host, Smash Boom Best · ex-Marketplace reporter
negligible personal · 80/100
Strengths
- Format- and newsroom-native — hosted a weekly kids' debate show and reported for Marketplace.
- Public-media-clean; bullseye on the 8–14 audience.
- Directly in Ember20's wheelhouse via his Marketplace/APM roots.
Weaknesses
- Negligible personal social — no reach tailwind; little public name recognition.
Opportunities
- The most relationship-warm and affordable host given Ember20's Marketplace/APM ties.
Threats
- Launch leans on the brand and marketing — he brings craft, not crowd.
Mr. DeMaioElementary teacher · comedic STEM YouTuber for kids
~0.4M · 79/100
Strengths
- Bullseye on the younger TWJ audience — a working teacher who makes funny, fact-checked STEM videos kids and classrooms love; Penguin Workshop book series.
- Develops content with his students; squeaky-clean, teacher-trusted.
Weaknesses
- Modest reach (~0.4M YT) and low mainstream press; his lane is sketch-comedy education, not a news desk.
Opportunities
- His sketch-and-song format could make kids' news genuinely fun; strong classroom distribution.
Threats
- Full-time teaching job limits weekly availability; unproven outside his own produced style.
Candidate SWOTs
Mark RoberEx-NASA/Apple engineer · CrunchLabs founder
~85M · 78/100
Strengths
- Reach of a small nation (~78M YouTube) and a spotless, beloved educational brand; instant launch attention.
Weaknesses
- Not a news host — his format is high-budget science spectacle, unproven at a weekly current-events desk.
Opportunities
- A "science of the news" lane could bridge his strengths to TWJ's mission.
Threats
- Cost & availability are the dealbreakers — runs his own empire, almost certainly out of reach for 48 eps/yr.
Steve BurnsOriginal host, Blue's Clues · "Alive" (Lemonada)
~4M · 78/100
Strengths
- The embodiment of trusted children's TV — direct-address, ask-and-listen instincts are perfect host DNA; huge earned-media multiplier per rare post.
Weaknesses
- Audience skews to nostalgic adults, not today's 8–14 viewer; posts infrequently.
Opportunities
- "Steve grew up and reads you the news" is a clean, ownable hook.
Threats
- Blue's Clues association owned elsewhere; bio reads "Definitely not Mr. Rogers" — he protects his own tone.
Candidate SWOTs
Kenan ThompsonSNL (longest-tenured) · All That / Kenan & Kel
~1M · 77/100
Strengths
- Kids'-TV legacy + live-host chops — Nickelodeon roots, decades of live sketch and awards-show hosting, network-vetted and family-safe.
Weaknesses
- Modest social (~1M); current kid recognition softer than his strength with parents.
Opportunities
- Comedy-forward delivery could make a kids' news desk genuinely entertaining.
Threats
- SNL commitment and a busy slate make weekly availability the question.
Faith SalieCBS Sunday Morning · NPR Wait Wait
~6K personal · 76/100
Strengths
- One of the best pure hosts on the board — five-time Emmy CBS contributor, NPR panelist, 300-ep Fair Game, Moth storyteller. Most available and affordable.
Weaknesses
- Almost no personal social (~6K); kid recognition near zero.
Opportunities
- Public-media pedigree maps onto a TWJ × NPR/CBS-adjacent distribution play; full control to build the persona.
Threats
- Launches with no reach tailwind absent a marketing engine.
Candidate SWOTs
Sanden TottenCo-creator, Brains On! & Forever Ago · indie owner
negligible personal · 76/100
Strengths
- Co-architect of the exact format — senior editor/writer across the Brains On universe; deep kids'-content craft and impeccable educator trust.
Weaknesses
- More writer/producer than on-air face — less proven as the host than Molly Bloom; negligible social.
Opportunities
- Co-owns Brains On (indie since late 2025) — a possible content/format partner as much as a host.
Threats
- No reach and limited host track record; owns adjacent kids' IP.
Kristen BellFrozen's Anna · The Good Place · Veronica Mars
~16M+ · 76/100
Strengths
- Near-ideal family fit — Frozen gives her enormous kid recognition plus strong parent appeal, and ~16M+ reach.
- Beloved, warm, broadly safe brand.
Weaknesses
- An actor, not a news host — desk craft unproven.
Opportunities
- One of the few names that pairs real reach with genuine kid-and-parent warmth.
Threats
- A-list rate and a busy slate — expensive and hard to lock weekly.
Candidate SWOTs
Phil TorresEntomologist · Expedition X host · ex-Bill Nye
~0.3M+ · 75/100
Strengths
- Credentialed scientist and seasoned TV host — "Jungle Guy" adventurer energy that kids and families love, with Discovery/HBO Max chops.
Weaknesses
- Modest reach (~0.3M+); science/nature lane is narrower than a general-news desk.
Opportunities
- Field-explorer format could give kids' news a sense of adventure; accessible and affordable vs. A-listers.
Threats
- Needs framing beyond bugs/nature to anchor a weekly news show.
Mo RoccaCBS Sunday Morning · Wait Wait · Mobituaries
~16K personal · 74/100
Strengths
- Superb host blending news and wit — the smart-but-fun register, with strong buyer/parent credibility.
Weaknesses
- Negligible personal social; adult skew, little kid recognition.
Opportunities
- Mobituaries-style curiosity translates beautifully to "the week, explained for kids."
Threats
- No reach tailwind; tone must be tuned for kids without losing the wit.
Candidate SWOTs
Mayim BialikNeuroscientist (PhD) · ex-Jeopardy! host · actor
~10M+ · 73/100
Strengths
- Real credentials + real fame — a neuroscience PhD plus Jeopardy!/Big Bang recognition and ~10M social. Proven national host.
Weaknesses
- A-list rate and a busy slate; audience skews family/adult fan.
Opportunities
- "Real scientist explains the news to kids" is a credible angle.
Threats
- Vetting flag: past public controversy (incl. vaccine-adjacent positions) cuts against a trust-first kids' brand.
Jack BlackSchool of Rock · Kung Fu Panda · Minecraft Movie
~20M+ · 73/100
Strengths
- Enormous kid recognition — Kung Fu Panda, the Minecraft Movie, School of Rock — and ~20M+ reach with a massive press engine.
Weaknesses
- A huge personality, not a host — chaotic energy; an edgy/irreverent streak (Tenacious D) sits uneasily with a trusted-news desk.
Opportunities
- Unmatched kid enthusiasm if channeled into a tightly produced segment.
Threats
- A-list film star — very expensive, very busy; tonal unpredictability is a brand-safety consideration.
Candidate SWOTs
Kai RyssdalHost/senior editor, Marketplace (APM) · Make Me Smart
modest personal · 72/100
Strengths
- A gold-standard daily news host — 20 years fronting the country's most widely heard business program, with "no econ degree required" accessibility.
- Public-media-clean; high trust. Squarely in Ember20's Marketplace/APM world — perhaps the warmest relationship on the board.
Weaknesses
- Audience is adult public-radio, not kids; modest personal social and no kid recognition.
Opportunities
- His explainer-first craft is exactly the kids'-news register; the existing relationship could ease access.
Threats
- Hosting Marketplace daily makes a full weekly commitment unlikely — more realistic as a contributor than a lead.
Xochitl GomezDWTS s32 champ · Marvel's America Chavez
~4–6M · 69/100
Strengths
- Gen Z / tween-native and diverse — aspirational to the younger end of the target, with a Marvel/DWTS press engine.
Weaknesses
- An actor/dancer, not a trained host; young, so less of a parent-gatekeeper trust anchor.
Opportunities
- Brings a young, diverse audience the brand wants.
Threats
- Acting career competes for time; news-host fit is a real stretch.
Methodology & caveats
Follower totals are approximate cross-platform figures as of mid-2026 and shift constantly. The public-media, Marketplace, and Brains On hosts' "reach" reflects podcast/broadcast audience rather than social followers, which is why their reach score is low despite real impact. Earned-media value (EMV) is a directional annual estimate — order-of-magnitude only, not a costed media plan; precise EMV is not publicly disclosed for these individuals. Scores (1–5) and the seven category weights are an editorial framework meant to be adjusted to the buyer and final format; the weighted totals move if you re-weight. Audience-skew and threat notes (incl. any controversy references) reflect public reporting and should be confirmed in formal vetting before any offer.
Ember20 · Development · TWJ NOW! host casting dossier · 18 candidates · single-host search · prepared June 2026