Dead zones may threaten coral reefs worldwide
Low oxygen conditions were most severe below a certain depth, evident in this photo of dying sponges.
Credit: Arcadio Castillo, STRI
Dead zones affect dozens of...
Amazon River no younger than 9 million years, new study shows
Amazon river mouth.
Credit: ESA
Researchers from the University of Amsterdam (UvA) and the University of Brasilia (Brazil) have determined the age of the formation of...
Less radiation in inner Van Allen belt than previously believed
Van Allen Probes circle radiation belts. This artist's rendering of the Van Allen Probes mission shows the path of its two spacecraft through the...
Warning of shortage of essential minerals for laptops, cell phones, wiring
University of Delaware researcher Saleem Ali at the Diavik Diamond Mine, Yellowknife, Northwest Territories, Canada.
Credit: Courtesy of Saleem Ali, University of Delaware
An international team...
A 48-hour sexual ‘afterglow’ helps to bond partners over time
Happy couple.
Credit: © anyaberkut / Fotolia
Sex plays a central role in reproduction, and it can be pleasurable, but new findings suggest that it may...
Unexpected, star-spangled find may lead to advanced electronics
This tiny US flag -- just a few nanometers wide and invisible to the naked eye -- is arguably the world's smallest image of...
Hubble’s glittering frisbee galaxy
This image from Hubble's Wide Field Camera 3 (WFC3) shows a section of NGC 1448, a spiral galaxy located about 50 million light-years from...
Mystery of how sperm swim revealed in mathematical formula
The whip-like tail of the sperm has a particular rhythm that pulls the head backwards and sideways to create a jerky fluid flow.
Credit: Image...
For this New Zealand parrot, ‘laughter’ is contagious
This photographs shows a juvenile kea playing in the air.
Credit: Raoul Schwing
When people are feeling playful, they giggle and laugh, making others around them...
Human skull evolved along with two-legged walking, study confirms
Comparison of the positioning of the foramen magnum in a bipedal springhare (left) and its closest quadrupedal relative, the scaly-tailed squirrel.
Credit: Image from Russo...
Scientists make the case to restore Pluto’s planet status
This composite of enhanced color images of Pluto (lower right) and Charon (upper left), taken by NASA's New Horizons spacecraft on July 14, 2015,...
