What if Thanos Really Had Eliminated 50% of All Life, Like in 'Avengers: Infinity War?' (Video)

If Thanos Actually Wiped Out Half of All Life, How Would Earth Fare in the Aftermath? (Sadie Witkowski)

A New Fossil Shows How Hagfish Went Back to Basics (Brian Switek)

Meet the 2019 TED Fellows and Senior Fellows

FutureProof: The Best of 2018

The Four Coolest Discoveries in Paleontology in 2018 (Michael Marshall)

Futureproof with Jonathan McCrea: Mass Extinctions and the Science of Voice

Frigid Polar Oceans, Not Coral Reefs, Are Hot Spots for Fish Diversity (Katherine Baillie)

Lauren Sallan Honored by Alma Mater University of Chicago for Achievements in Paleobiology (Katherine Baillie)

25 Books Everyone Should Read, According to TED Speakers (Jessica Stillman)

Your Holiday Reading Recommendations from TED Speakers

Penn Junior Jack Stack is Pursuing His Paleontological Dreams (Katherine Baillie)

Why Don't Fish Swim Upside Down? (Harrison Tasoff)

Tedje van der week: de succesfactoren van evolutie

Anthropological Airwaves: Episode 7

Jawless (Franz Anthony)

Lauren Sallan: Martin Meyerson Assistant Professor in Interdisciplinary Studies

She Prints Sea Shells (Susan Ahlborn)

Why this Penn professor's research into extinction has never been more relevant (Rahul Chopra)

This Young Scientist Is Researching How to Prevent the Sixth Mass Extinction (Karim Abouelnaga)

Paleobiologist Probes Fossil Record for Perspective On Today (Katie Unger Baillie)

60-Second-Slam lets students and faculty show their work (Video, Lauren Thacker)

QuoTED Fellows 2017: Inspiring nuggets from this year's rising stars (Josh Rubin)

Ok Go on Facebook Live at TED 2017 (starts at 4:40)

Who Won the Evolutionary Arms Race?

Synthetic Yeast, Fake Science News, and the Tully Monster (Radio Segment)

Tully Monster Still a Mystery (Brian Switek)

Did this prehistoric monster have a backbone? Penn wades into the debate (Tom Avril)

Identity of the 'Tully monster' still a mystery (Elizabeth Eaton)

The Mystery of The Tully Monster Continues (David Pescovitz, Front Page)

This Week's Discoveries (Staff)

Ancient Ancestors to Humans Had Not One, But Two Tails (Sarah Benton Feitlinger; For Grades 5-8)

Amazing Images: The Best Science Photos of the Week (Staff)

Tully the Spineless Monster? Experts Say Ancient Beast Had No Backbone (Laura Geggel)

Fossil: Was der ein Tier was Tullimonstrum gregarium? (Frank Patalog)

Tully the Spineless Monster? Experts Say Ancient Beast Had No Backbone (Laura Geggel)

Tully Monster mystery not a closed case, scientists say (Brooks Hays)

Rätselhaftes Tully-Monster doch kein Wirbeltier? (Jan Osterkamp)

The Weirdest Animal That Ever Lived? (Harry Pettit)

Not Kraken The Case: (Margi Murphy)

Mysterious Tully Monster was a Weird Creature But Not a Fish (Lea Surugue)

Scientists Spar Over 300-Million-Year Old Tully Monster: Is It a Fish Or a Worm? (Ruth Schuster)

'Tully Monster' Mystery is Far From Solved, Group Argues (Katherine Baillie)

This Penn Professor is Taking Her Love of Fish to the TED Stage (Haley Suh)

Penn Paleobiologist Lauren Sallan Selected as a 2017 TED Fellow (Katherine Baillie)

Meet the 2017 Class of TED Fellows and Senior Fellows

Meet the Inspiring 2017 Class of Ted Fellows

Fossilen stellen "Biogenetische Grundregel" in Frange (Michael Strang)

How Humans Lost Their Tails, Twice (Ryan O'Hare)

A Tale of Two Tails (Joshua Krisch)

Fish Fossils Reveal How Tails Evolved, Professor Finds (Katherine Biallie)

How Humans Lost Their Tail, Twice (Jen Viegas)

A Tale of Two Tails (Tom Bawden)

Las Colas de Peces y Animales de Cuatro Patas no Tienen Origen Comun

Ancient Little Fishes Clue Us In to Why Tiny Animals Survive Extinction Events (Karen Kirkpatrick)

GSA Podcast including interview with Jack Stack

After a Mass Extinction, Only the Small Survive (Carl Zimmer)

Study: Mass Extinctions Lead to Small Creature Dominance (Video)

Wired Awake: 10 must-read articles for November 16, 2015 (linked to Motherboard story)

The meek will inherit the Earth? (Rachel Feltman)

Evolution: Warum klein clever is (Staff/DPA, In German)

When It Comes to Surviving Mass Extinctions, Smaller Is Better (Becky Ferriera)

In a mass extinction, why only the smallest survive (Beatrice Gitau)

Too Small to Fail (Gwynn Guilford)

After mass extinctions, the meek (fish) inherit the earth. (Rachel Feltman, w/ video)

Ecological Instability Favors Smaller Species (Brooks Hays)

Evolution: Der Vorteil der Zwerge (Michael Stang, w/ German radio interview)

After Mass Extinction: Just Animals at Extremes (Jennifer Viegas)

Science Podcast: 13 November Show

Ancient mass extinction may have shrunk Earth's Creatures (Sid Perkins)

Mass extinctions hit large animals the hardest: small vertebrates flourish after deadly global catastrophes (Sarah Griffiths)

Ancient Mass Extinction Lead to Dominance of Tiny Fish (Featured on Penn Homepage 11/13/15)

Past mass extinctions preferentially wiped out large species (Diana Gitig)

Sharkopedia: Long-snouted Baby Sharks Thrived in the Oldest Known Shark Nursery

Shark Week: 15 Most Surprising Shark Facts #11

Ithaca teenager penned fossil hunting guide (About Jack Stack, Penn class of 2019; Kelly Rochereau)

Extinct freshwater sharks that spawned in saltwater had been mistaken (Geoffrey Giller)

Prehistoric sharks were earliest to migrate (Robyn Braun)

Fossilized shark nursery - complete with eggs - reveals that fish migrated at least 310 Mya (Ellie Zolfagharifard)

Ancient nursery of bizarre spoon-billed sharks discovered (Tia Ghose)

Prehistoric sharks were earliest animals to migrate (Robyn Braun)

Picture of the day: the ancient long-snouted Bandringa shark

Scientist identifies ancient shark nursery in...Illinois (Noelle Swan)

Sharks of the Midwest (Mitch Smith). Video

Prehistoric shark nursery found in Midwest (Deborah Netburn)

ScienceShot: a 300-million-year old shark migration (Ian Randall)

Fossils show migration behavior in early sharks (UPI)

Prehistoric shark nursery found at Illinois nuke plant (Jennifer Viegas)

Study shows ancient shark spawned like salmon in reverse (Brett Smith) Video

Early sharks reared young in prehistoric river delta (James Erickson)

Scientists study emergence of ray-finned fish (Brett Smith)

Evolution's opportunists: ray-finned fish (James Erickson)