Most dinosaurs were wiped out 66 million years ago, but scientists are still trying to piece together exactly what caused their demise. An asteroid, at least as large as Mount Everest, struck the Earth at that time, likely leading to the extinction of all non-avian dinosaurs. However, new research suggests that volcanic activity at Deccan Traps in India may have doomed the animals before the asteroid struck off the coast of Mexico. A series of four massive pulses of eruptions there released enough lava to build a ring one mile thick and five miles across that would encircle the globe. These events also released vast quantities of poisonous gas into the atmosphere, and created extreme global warming, raising temperatures worldwide. This climate change may have weakened the line of dinosaurs so much, they were unable to withstand the additional climate change which happened once the asteroid hit the Earth.Read More Did Global Warming Kill off the Dinosaurs?
Astronomers at the SETI Institute are estimating that the human race will likely make contact with an alien species sometime in the next 25 years. Science writer James Maynard released a new look on thecosmiccompanion.com seeing what aliens may look like, based on the laws of science and evolution. Such aliens, he finds, are likely to have legs and some form of two or more eyes, and have a kind communication. Other than those features, extraterrestrials may have little in common with life on Earth.Read More Preparing for E.T. – What do Aliens Look Like?
Dinosaurs were wiped out by an asteroid impact 66 million years ago. But, new research suggests plankton and other animals returned to the impact site just a few years after the cataclysmic event. Within 30,000 years, the region was teeming with life. Other areas of the Earth took up to 300,000 years to recover from the collision. Researchers are questioning how life recovered so quickly near the impact site.Read More Life Returned Quickly After Dinosaurs were Wiped Out by an Asteroid
Did asteroids deliver the chemicals needed to begin life on Earth? A new study makes that possibility seem more likely.Read More Did Life on Earth Start Because of Asteroids?