Determining why the dinosaurs went extinct has been debated for ages and studied for even longer. Now, the most acceptable extinction event hypothesis — that of an astroid impact that changed the Earth's climate — has a very interesting new wrinkle. As it turns out, it might not have been the size of the rock or the actual destruction it wrought that made the asteroid so utterly devastating, but simply the exact spot where it slammed into our planet.

Studying rock samples from up to 1,300 meters beneath the Gulf of Mexico, researchers were able to get a fantastic look at what the area was like at the time when the asteroid — estimated to be nearly 10 miles wide — struck. When the rock slammed into the Earth 66 million years ago, the area was little more than a shallow sea, and scientists now believe that the collision sent an enormous amount of sulphur skyward, which ultimately doomed the planet by sending it into an ice age which the lumbering prehistoric beasts simply couldn't endure.

The researchers, who presented their findings in a new BBC documentary called The Day The Dinosaurs Died, suggest that if the killer asteroid had made a watery splashdown in the middle of the Atlantic or Pacific oceans, the deadly vaporized rock that blotted out the sun in the days after its impact would have been far less severe. If that had happened, plant life would still have gotten the sunlight it needed to survive, and the food chain might have remained intact. Of course, had that happened, the eventual rise of mammals may also never have occurred, and we might not even be here to study any of it at all.

For years, Hydra has lurked in the shadows of the Marvel Universe, a corrupting influence that taxed even the greatest of heroes. With the group scoring their greatest victory in Secret Empire, we take a look back at the History of Hydra…

The History of Hydra stands as one of deep conflict, not only between the organization and the greater world it tried to conquer for generations, but within its own evil ranks. After years of battle with Nick Fury and his ultimate spy system, S.H.I.E.L.D., Hydra scored an incredible victory at the point in time when it added another wrinkle to this war: surprise.

S.H.I.E.L.D.’s longtime director discovered information that revealed his organization’s real taskmaster, Hydra, and its unwitting role in intelligence gathering for the criminal group. Baron Wolfgang von Strucker, Hydra’s on-again-off-again leader, seemed glad of the revelation, and used it as a springboard to reunite the several separate factions of Hydra under his guidance once again. Pulling together Madame Hydra, Kraken, Hive, Gorgon, and Viper as allies to rebuild what he referred to as Hydra’s true existence, he aligned with Norman Osborn’s H.A.M.M.E.R. and got back to the business of subjugating the planet.

Avengers (2010) #24

• Published: March 14, 2012
• Added to Marvel Unlimited: October 16, 2012
• Rating: T+
• Writer: Brian Michael Bendis

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What is Marvel Unlimited?

Alas, Nick Fury possessed surprises of his own. When Kraken stood unveiled as Fury’s assumed-dead brother Jake, the super spy himself told Strucker that in fact S.H.I.E.L.D. ran Hydra, not the other way around, and then promptly shot the villain in the head.

Leaderless again, Hydra entered into another period of internal power struggles as its cells attempted to operate independently with players such as Madame Hydra leaching away H.A.M.M.E.R. soldiers to bolster her own forces and its science division, A.I.M. Like many times in the past, a weakened Hydra made for fertile ground in which a true master manipulator could rise up and seize its reins for their own end…

Check Out: SECRET WARRIORS #1–2, ALL-NEW CAPTAIN AMERICA #4, NEW AVENGERS #18, AVENGERS #24

For years, Hydra has lurked in the shadows of the Marvel Universe, a corrupting influence that taxed even the greatest of heroes. With the group scoring their greatest victory in Secret Empire, we take a look back at the History of Hydra…

The History of Hydra stands as one of deep conflict, not only between the organization and the greater world it tried to conquer for generations, but within its own evil ranks. After years of battle with Nick Fury and his ultimate spy system, S.H.I.E.L.D., Hydra scored an incredible victory at the point in time when it added another wrinkle to this war: surprise.

S.H.I.E.L.D.’s longtime director discovered information that revealed his organization’s real taskmaster, Hydra, and its unwitting role in intelligence gathering for the criminal group. Baron Wolfgang von Strucker, Hydra’s on-again-off-again leader, seemed glad of the revelation, and used it as a springboard to reunite the several separate factions of Hydra under his guidance once again. Pulling together Madame Hydra, Kraken, Hive, Gorgon, and Viper as allies to rebuild what he referred to as Hydra’s true existence, he aligned with Norman Osborn’s H.A.M.M.E.R. and got back to the business of subjugating the planet.

Avengers (2010) #24

• Published: March 14, 2012
• Added to Marvel Unlimited: October 16, 2012
• Rating: T+
• Writer: Brian Michael Bendis

Read Buy Digital Copy

What is Marvel Unlimited?

Alas, Nick Fury possessed surprises of his own. When Kraken stood unveiled as Fury’s assumed-dead brother Jake, the super spy himself told Strucker that in fact S.H.I.E.L.D. ran Hydra, not the other way around, and then promptly shot the villain in the head.

Leaderless again, Hydra entered into another period of internal power struggles as its cells attempted to operate independently with players such as Madame Hydra leaching away H.A.M.M.E.R. soldiers to bolster her own forces and its science division, A.I.M. Like many times in the past, a weakened Hydra made for fertile ground in which a true master manipulator could rise up and seize its reins for their own end…

Check Out: SECRET WARRIORS #1–2, ALL-NEW CAPTAIN AMERICA #4, NEW AVENGERS #18, AVENGERS #24

Celebrate the Wall Crawler’s return to the big screen in “Spider-Man: Homecoming” by heading back to school with these adventures available on Marvel Unlimited!

Starting college can be crazy-stressful. You’ve got to get a handle on the campus layout, figure out where to take your classes, get all your books and meet the new people you’ll spend most of your life with. As you can imagine, the first day of school for Peter Parker comes filled with trials and tribulations galore!

Starting with 1965’s AMAZING SPIDER-MAN #31, Stan Lee and Steve Ditko started putting the Wall-Crawler through some intense paces. First, he battled some masked and uniformed crooks stealing radioactive devices for The Master Planner. They distracted him long enough to get the stolen goods away, survived a helicopter crash and escaped with SCUBA gear.

The next day, Peter headed to Empire State University for class registration. That night he returned home and Aunt May fainted. He called a doctor who in turn requested an ambulance to take the frail woman to the hospital. Once she got settled and dozed off in her hospital bed, Peter left May and returned home—but didn’t sleep a wink because of worry and guilt.

Amazing Spider-Man (1963) #31

• Published: December 10, 1965
• Added to Marvel Unlimited: November 13, 2007
• Penciller: Steve Ditko

Read Buy Digital Copy

What is Marvel Unlimited?

That put Peter in a less-than-great mood on his first day of school where he blew off brand new characters Gwen Stacy and Harry Osborn repeatedly. By the next issue, Parker’s fuse has run shorter than we’d ever seen. Why? Because he learned that Aunt May’s got radiation poisoning from living with him all these years! All this, and Doctor Octopus revealed himself as The Master Planner!

Spidey then enlisted Dr. Curt Connors to help figure out how to heal Aunt May. They ordered a serum that got stolen by Master Planner at the airport which sent Spider-Man on a searching rampage. This led him to Doc Ock’s underwater headquarters where he unleashed his anger. This actually brought a ton of machinery down on top of him, not to mention water from the river overhead.

In AMAZING SPIDER-MAN #33, broken, beaten, and close to drowning, Spider-Man dug deep, thought about Aunt May and Uncle Ben, and eventually lifted the rubble off of himself and got out before the water rose too high. On the way out, he grabbed the serum, deliriously fought off Master Planner goons, returned to Dr. Connors, and successfully saved his aunt!

A Tangled Web

Noted Spidey scribe Dan Slott referenced the battle between Spider-Man and Doctor Octopus in the underwater lair in the pages of SUPERIOR SPIDER-MAN #19. At that time, Otto inhabited Peter’s body, but could also access his memories. In doing so, Octavius allowed the Parker personality to dig itself out of the rubble it had been buried under since the ninth issue of that series, eventually paving the way for Peter to regain control of his body, move back over to AMAZING SPIDER-MAN and take on the epic challenge of Spider-Verse.

Celebrate the Wall Crawler’s return to the big screen in “Spider-Man: Homecoming” by heading back to school with these adventures available on Marvel Unlimited!

Starting college can be crazy-stressful. You’ve got to get a handle on the campus layout, figure out where to take your classes, get all your books and meet the new people you’ll spend most of your life with. As you can imagine, the first day of school for Peter Parker comes filled with trials and tribulations galore!

Starting with 1965’s AMAZING SPIDER-MAN #31, Stan Lee and Steve Ditko started putting the Wall-Crawler through some intense paces. First, he battled some masked and uniformed crooks stealing radioactive devices for The Master Planner. They distracted him long enough to get the stolen goods away, survived a helicopter crash and escaped with SCUBA gear.

The next day, Peter headed to Empire State University for class registration. That night he returned home and Aunt May fainted. He called a doctor who in turn requested an ambulance to take the frail woman to the hospital. Once she got settled and dozed off in her hospital bed, Peter left May and returned home—but didn’t sleep a wink because of worry and guilt.

Amazing Spider-Man (1963) #31

• Published: December 10, 1965
• Added to Marvel Unlimited: November 13, 2007
• Penciller: Steve Ditko

Read Buy Digital Copy

What is Marvel Unlimited?

That put Peter in a less-than-great mood on his first day of school where he blew off brand new characters Gwen Stacy and Harry Osborn repeatedly. By the next issue, Parker’s fuse has run shorter than we’d ever seen. Why? Because he learned that Aunt May’s got radiation poisoning from living with him all these years! All this, and Doctor Octopus revealed himself as The Master Planner!

Spidey then enlisted Dr. Curt Connors to help figure out how to heal Aunt May. They ordered a serum that got stolen by Master Planner at the airport which sent Spider-Man on a searching rampage. This led him to Doc Ock’s underwater headquarters where he unleashed his anger. This actually brought a ton of machinery down on top of him, not to mention water from the river overhead.

In AMAZING SPIDER-MAN #33, broken, beaten, and close to drowning, Spider-Man dug deep, thought about Aunt May and Uncle Ben, and eventually lifted the rubble off of himself and got out before the water rose too high. On the way out, he grabbed the serum, deliriously fought off Master Planner goons, returned to Dr. Connors, and successfully saved his aunt!

A Tangled Web

Noted Spidey scribe Dan Slott referenced the battle between Spider-Man and Doctor Octopus in the underwater lair in the pages of SUPERIOR SPIDER-MAN #19. At that time, Otto inhabited Peter’s body, but could also access his memories. In doing so, Octavius allowed the Parker personality to dig itself out of the rubble it had been buried under since the ninth issue of that series, eventually paving the way for Peter to regain control of his body, move back over to AMAZING SPIDER-MAN and take on the epic challenge of Spider-Verse.

Nascar’s Ryan Blaney and Erik Jones talk Deadpool, Iron Man, racing and more on an all new This Week in Marvel podcast!

Download episode #288.5 of This Week in Marvel from Marvel.com, check out Marvel Podcast Central, grab the TWiM RSS feed and subscribe to This Week in Marvel on iTunes or Soundcloud! Head over now to our new hub to listen to the full run of This Week in Marvel including our latest episode!

This Week in Marvel focuses on delivering all the Marvel info on news and new releases–from comics to video games to toys to TV to film and beyond! New episodes will be released every Tuesday and Thursday (or so) and TWiM is co-hosted by Marvel VP Executive Editor of Digital Media Ryan “Agent M” Penagos and Editorial Director of Marvel Digital Media Ben Morse with Manager, Video & Content Production: Blake Garris, Editor Marc Strom, and Assistant Editor Christine Dinh. We also want your feedback, as well as questions for us to answer on future episodes! Tweet your questions, comments and thoughts about TWiM to @AgentM, @BenJMorse, @blakegarris or @Marvel with the hashtag #ThisWeekinMarvel!

Nascar’s Ryan Blaney and Erik Jones talk Deadpool, Iron Man, racing and more on an all new This Week in Marvel podcast!

Download episode #288.5 of This Week in Marvel from Marvel.com, check out Marvel Podcast Central, grab the TWiM RSS feed and subscribe to This Week in Marvel on iTunes or Soundcloud! Head over now to our new hub to listen to the full run of This Week in Marvel including our latest episode!

This Week in Marvel focuses on delivering all the Marvel info on news and new releases–from comics to video games to toys to TV to film and beyond! New episodes will be released every Tuesday and Thursday (or so) and TWiM is co-hosted by Marvel VP Executive Editor of Digital Media Ryan “Agent M” Penagos and Editorial Director of Marvel Digital Media Ben Morse with Manager, Video & Content Production: Blake Garris, Editor Marc Strom, and Assistant Editor Christine Dinh. We also want your feedback, as well as questions for us to answer on future episodes! Tweet your questions, comments and thoughts about TWiM to @AgentM, @BenJMorse, @blakegarris or @Marvel with the hashtag #ThisWeekinMarvel!

CENTENNIAL, Colo. (AP) — A suburban Denver robbery-kidnapping convict was ordered released from prison Tuesday after being mistakenly freed decades early, then re-incarcerated.