Science

Paleontologist Jack Horner explains what dinosaurs tell us about our own origins and what we can learn by attempting to revive a piece of the past.

Juan Enriquez argues that human evolution is far from over — Homo sapiens are becoming a new species right before our eyes.

David Christian explains the history of the universe from the big bang, and how humans occupy little more than a millisecond on that cosmic timeline.

Louise Leakey describes her family's long search for early human remains in Africa, and how unlocking that mystery is the key to understanding our past and our future.

Geneticist Spencer Wells describes how he uses DNA samples to trace our individual origins going back 2,000 generations.

Geneticist Spencer Wells tells the story of early humans, and our eventual migration from Africa.

Harold Kroto shared a Nobel in 1996 for finding a new type of carbon molecule that ignited the field of nanotechnology. Find a passion where — with hard work — you can be the best, he advises.

Bull trout are dwindling in Montana as their home waters warm and invasive fish devour them. Scooping up threatened fish and moving them higher up the mountain could backfire. Is the risk worth it?

A government-appointed panel wanted the federal government's 2015 nutrition advice to consider a food's environmental impact. But the Cabinet secretaries with final authority say it won't happen.