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Long COVID patients can experience severe energy crashes after physical exertion. New research provides clear evidence that there's a biological basis for the symptoms.

Tiny plastic debris — some so small you can't see it — has previously been found in human blood, excrement and in the depths of the ocean.

In Antarctica, researchers have found patches of life, sustained in large part by droppings from seals and penguins. Changes in those populations could have ripple effects down the ecosystem.

The Event Horizon Telescope project, which produced the world's first image of a black hole in 2019 in the M87 galaxy, unveiled a new view of its magnetic fields as captured by polarized light.

The sturm und drang of early adolescent emotions can be rough on everyone in the family. Fear not, developmental psychologists say — it's almost certainly going to get better. In a few years.

The Scripps Research Institute Monday announced the discovery of a molecule that helps retard the growth of certain types of cancer.

Scientists identified two genetic variants that make it more likely that a woman will give birth to fraternal twins. Knowing this might help develop safer fertility treatments.