Arctic’s Winter Sea Ice Drops to Its Lowest-Recorded Level
Much of the ice also appears to be thinner than normal — further signs of climate change’s effects on the region.
A Scholarly Sting Operation Shines a Light on ‘Predatory’ Journals
A group of researchers created a ruse to draw attention to the seamy side of open-access journals, some of which will publish just about anything...
Shaking Up the Dinosaur Family Tree
A Ph.D candidate and a computer program that took five minutes to run may upend the dinosaur classification system that has been used for more than...
Op-Ed Contributor: Why Trump’s N.I.H. Cuts Should Worry Us
The president’s stance on science funding could have serious consequences.
Trump Lays Plans to Reverse Obama’s Climate Change Legacy
The White House is preparing to dismantle major policy actions of the Obama era, including a plan to close hundreds of heavily polluting power plants.
9 Deaths Are Linked to Rare Cancer From Breast Implants
The problem is more likely to occur with textured implants than with smooth implants, the F.D.A. said, and it is usually treatable and not often...
Matter: A New Form of Stem-Cell Engineering Raises Ethical Questions
“Sheefs” will test the limits of current regulations, experts say, as embryolike structures are created directly from stem cells.
News Analysis: An End to Heart Disease? Not Quite
The introduction of a new class of cholesterol drugs led some experts to believe that we might be able to virtually eliminate heart attacks. But it...
Even Penguins Have Children Who Won’t Leave the Nest
Even fully fledged chicks will hound their parents for food, researchers find.
Popular Prostate Cancer Therapy Is Short, Intense and Unproved
Researchers hope a study will shed some light on a cancer treatment, using radiation, that is growing in popularity and surrounded by questions.
Take a Number: More Grandparents Than Ever
Since 2001 the number of grandparents has grown by 24 percent, partly as a result of the aging of the baby boom generation.
The Death and Rebirth of the Duncan Grapefruit
Once a breakfast staple, this white, seed-packed variety of the fruit has all but disappeared. Yet there are hints of a small-scale revival.