Latest Science headlines

NASA launches last of its longtime tracking satellites

The satellite will be a vital link to astronauts in orbit as well as to the Hubble Space Telescope.

Sperm Count in Western Men Has Dropped Over 50 Percent Since 1973, Paper Finds

The sperm count of men in Western countries has been declining precipitously with no signs of “leveling off,” according to new research, bolstering a school of thought that male health in the modern world is at risk, possibly threatening fertility.

Your Instagram posts may hold clues to your mental health

Instagram users with a history of depression seem to present the world differently from their peers, according to a study.

Scientists create the first mutant ants

On Thursday, two independent research teams described their work deleting ant genes.

‘Women computers’ often couldn’t use Harvard’s telescope. They changed astronomy anyway

One woman, after being abandoned while pregnant by her husband, got a job as a maid and ended up discovering the Horsehead Nebula.

What’s a total solar eclipse, and why is this one so unusual?

What makes the Aug. 21 eclipse so special is that it will cut diagonally across the entire United States.


// Boston Globe Instagram photos

A live stream of Instagram posts from The Boston Globe photo department.