The discovery of the structure of DNA in the early 1950s is one of the most riveting dramas in the history of science, crammed with brilliant research, naked ambition, intense rivalry and outright deception.

There were many players, including Rosalind Franklin, a wizard of X-ray crystallography, and Francis Crick, a physicist in search of the secret of life. Now, with the death of the American geneticist James Watson at 97 on Thursday, the last of those players is gone.

Continue reading “The DNA Helix Changed How We Thought About Ourselves” →

In Paola Arlotta’s lab at Harvard is a long, windowless hallway that is visited every day by one of her scientists. They go there to inspect racks of scientific muffin pans. In every cavity of every pan is a pool of pink liquid, at the bottom of which are dozens of translucent nuggets no bigger than peppercorns.

The nuggets are clusters of neurons and other cells, as many as two million, normally found in the human brain. On their daily rounds, the scientists check that the nuggets are healthy and well-fed.

Continue reading “What We Can Learn From Brain Organoids” →

Jay Falk: The project that was terminated was on this hummingbird, the white-necked jacobin. The males in this species have a deep blue iridescent head, a bright white belly and a white tail, which they’re constantly spreading and showing off to each other. And the females look very different. They have a mottled gray throat and belly, and then their tail is very dark, almost black. But 20 percent of the females look nearly identical to the males. Why, if you’re a female, would you want to look like a male?

Continue reading “He Studied Why Some Female Birds Look Like Males” →

For more than 1,000 years, the Inupiat people of Alaska have hunted bowhead whales in the Arctic Ocean. Over the centuries, they grew to appreciate the long lives of the animals, the longest-living mammals on Earth. Generations of hunters could recognize the same individual at sea. Inupiat captains have told researchers that a bowhead whale lives two human lifetimes.

Continue reading “Life Lessons From (Very Old) Bowhead Whales” →