24 x 7 World News

A new dinosaur doomsday exhibit showcases survival after destruction

0

About 66 million years ago, an asteroid slammed into Earth and the planet suddenly went dark.

The impact and its aftermath were catastrophic. Tsunamis inundated coastlines, earthquakes rattled the ground, acid rain poured from the skies and wildfires scorched the terrain. Roughly 75 percent of species, including all nonavian dinosaurs, went extinct. ┬а

That day is the center of тАЬImpact: The End of the Age of the Dinosaurs,тАЭ a new exhibition at the American Museum of Natural History in New York City. тАЬThereтАЩs no doubt тАФ well, arguably at least тАФ that it was the worst day of the last half billion years,тАЭ says Roger Benson, the museumтАЩs curator of dinosaur paleobiology.

Visitors first step into life before doomsday. Inside a dimly lit hall, a life-size model of a mosasaur, a marine reptile, attacks a long-necked plesiosaur. Nearby, a Triceratops adorned with quills тАФ a controversial hypothesis based on fossilized skin тАФ tears down a small tree. That diorama, based on fossils from the Hell Creek formation in North Dakota, includes other animals such as turtles, birds and a Didelphodon, an extinct predatory mammal reminiscent of a Tasmanian Devil.

ThereтАЩs more to do than look at dioramas. One interactive display quizzes visitors on their daily habits to find out what Cretaceous critter they are most like. Another plays sounds of certain animals, including Beelzebufo, a large predatory frog. ┬а

Then, impact.

A 6-minute film in a small theater describes, in extreme detail, the destruction wrought by a Mount EverestтАУsized asteroid crashing into Earth with the force of 10 billion atomic bombs. The asteroid instantly vaporized in a blast zone hotter than the surface of the sun. Its collision sent trillions of tons of rocks into the sky, blocking most sunlight for a year and a half. Many plants, and the animals who ate them, died. Here, the exhibitionтАЩs dim lighting feels deliberate тАФ the roomтАЩs darkness makes an already grim topic feel weightier.

In the next room, the once thriving Triceratops is now a pile of bones and visitors can smell the wildfires. Spotlights draw attention to displays describing how researchers have built the case that an asteroid caused the mass extinction event, including the discovery of the Chicxulub crater off the coast of Mexico. A large globe shows the hundreds of spots where scientists have found iridium, a rare metal and a sign of extraterrestrial impact. ┬а

Missing is mention of another hypothesis: volcanism. ThatтАЩs because the broad scientific consensus is that the asteroid impact was largely responsible, says Denton Ebel, a curator in the museumтАЩs department of Earth and Planetary Sciences. тАЬWe donтАЩt need volcanoes. The impact alone explains it,тАЭ Ebel says. тАЬExplains the timing, explains the knife edge in history thatтАЩs recorded in the rock record.тАЭ

The asteroidтАЩs destruction made way for new life. Across the hall, visitors learn how traits such as the ability to break open nuts helped some animals survive in the aftermath and how rainforests filled emptied landscapes. They can also find out whether their Cretaceous creature from the earlier quiz lived or died. As the world recovered, an Age of Mammals began that persists today.

There is a small chance that another massive asteroid impact could threaten Earth. But the exhibit notes that with todayтАЩs technology, we would see it coming and hopefully prevent another devastating asteroid impact. An interactive display allows visitors to practice themselves, redirecting an asteroidтАЩs path with lasers or with a probe, akin to NASAтАЩs DART mission.

For those who may worry about an impending apocalypse, тАЬImpact: The End of the Age of the DinosaursтАЭ is a reminder that a thriving world thrown into chaos can eventually thrive again.

Leave a Reply