Researchers at Newcastle University in England report they have coaxed the first human sperm cells from embryonic stem cells, in a remarkable demonstration of how quickly the field of stem cell science is moving.
The achievement, described in the journal Stem Cells and Development, comes just 11 years after the first human embryonic stem cell line was created.
The US military said it killed four more people in a boat strike in the eastern...
As millions of people held their breath, the four Artemis II astronauts flawlessly splashed down back...
The astronauts aboard NASA's Artemis II have now traveled farther from Earth than any other humans...
