Scientists have discovered a 48-million-year-old fossil food chain in Germany. It's a snake with a lizard in its stomach, which in turn had eaten a beetle.
An extraterrestrial impact likely caused the dinosaur extinction 65 million years ago. Did a comet strike 10 million years later cause a global warming?
Lamnid sharks and tuna have similar physical traits that make them top ocean predators. But, a new study says, they took very different evolutionary paths.
“Sea ice really is their platform for life. They are capable of existing on land for part of the year, but the sea ice is where they obtain their main prey.”