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Lunar samples hinted at a barrage of debris pummelling planets billions of years ago. Fifty years after Apollo 11, that story is still unfolding.
The slimy stuff has a surprisingly wide array of beneficial biological functions
How limestone-covered algae sway global climate — and how their fate may shift as the oceans acidify
The humble bivalves can clean polluted water and bump up diversity — but in dammed rivers and fouled watersheds, many species face extinction. With help, maybe they can save themselves.
Technology is enabling increasingly lifelike models of organs to help doctors practice operations.
Studies that deliberately infect people with diseases are on the rise. They promise speedier vaccine development, but there’s a need to shore up informed consent.
Our brains manage to construct stable images even as our eyes keep darting around. Here’s what we know about how that happens.
People have been using metals to manipulate light for centuries. Now researchers are using it to create powerful biosensors.
The eye disease causes millions to go blind. New treatments aimed at protecting nerve cells — or generating new ones — may slow or even stop the damage.