After nine months in microgravity, the NASA astronauts would have experienced bone density loss and muscle weakness, despite resistance and endurance training for up to two hours a day in space to ...

Down to their very DNA, astronauts’ bodies can change in weird and sometimes significant ways, particularly during a long flight high above the Earth: They start to elongate, often developing a taller ...

Five years after Texas’ first COVID death, the state spends less on public health, vaccination rates have dropped and a distrust of authority has taken hold.