The most widely accepted scientific explanation for the arrival of all complex life on Earth has had an unsolved mystery at its heart. According to the theory, all plants, animals and fungi, known ...

Dear Abby: My husband, “Dan,” and I are separated. Our children are ages 20 and 22. Dan has just been diagnosed with some type of serious medical issue (likely life-threatening). He has shared the ...

Some 400 million years ago, long before dinosaurs or even trees had evolved, an enigmatic organism towered over the landscape like a prehistoric monolith. Now, new research makes the case that the ...

After she dropped to her knees outside her home in Midlothian, Virginia, suffocating, after she was lifted into the ambulance and told herself, “I can’t die this way,” and after emergency workers at ...

The Ediacara Biota are some of the strangest fossils ever found—soft-bodied organisms preserved in remarkable detail where preservation shouldn’t be possible. Scientists now think their survival in ...