Tag: snowballearth
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PBS Eons: How Earth’s First, Unkillable Animals Saved the World
PBS Eons has another new episode. This time they discuss sponges and how they saved the world to allow more complex life to evolve. They have survived every catastrophe and every mass extinction event that nature has thrown at them. And by being the little, filter-feeding, water-cleaning creatures that they are, sponges may have…
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PBS Eons: How Volcanoes Froze the Earth (Twice)
PBS Eons has a new episode. This one is about Snowball Earth, which is the theory that the whole earth was covered by ice. This happened at least twice in the last 700 million years. Over 600 million years ago, sheets of ice coated our planet on both land and sea. How did this…
