Test time has arrived: the first person has been treated in a highly anticipated gene-therapy trial that aims to coax aged cells to take on a younger identity. The clinical trial is testing an ...

What we're essentially doing is forcing sleep in a local region of the brain. While that part is solidifying memories and restoring learning capacity, other parts stay aware/vigilant and connected to ...

Maybe it’s using the word “oligarchs” instead of rich people. Or referring to “people experiencing food insecurity” rather than Americans going hungry. Or “equity” in place of “equality,” or ...