When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. NASA's bold plan to park an asteroid near the moon may also test out a new way to protect Earth ...

Scientists analysed rocks from South Africa that hold early history. These samples date back almost 3.3 billion years.

Science teachers in a summer physics class at Southeast Missouri State University relied on shadows Thursday to calculate the Earth's circumference during the summer solstice, the longest day of the ...