March 24, 2015

Prehistoric Stone Tools with Animal Residue

About 2.8 million years ago, early humans probably survived on a diet of plants. As the human brain expanded, however, it craved richer nourishment - namely animal fat and meat. Lacking claws and sharp teeth, early humans developed the skills and stone tools necessary to hunt large animals and cut the fat and meat from the carcasses.

Recently, this rare fossil shed new light on early human evolution. Long before that, our oldest known primate ancestors lived in trees and may have looked like this.

Now, evidence of human carnivorous behavior has been found among elephant remains at a Lower Paleolithic site in Revadim, Israel.

March 23, 2015

Solar Eclipse from Stuttgart, Germany

(Copyright Steven Spence, 2015)

On March 20, 2015, people across Europe, northern and eastern Asia, and northern and western Africa were treated to the best view of a partial solar eclipse. Steven Spence, a member of EH Science’s Contributors Community, was fortunate to witness this special celestial event, and today he shares with us his experience of photographing it. Don't miss Steven's other photos, including Winter Bees, First Visitors.

42 North American Butterflies

This animated infographic shows 42 different North American species of butterfly. It is the work of talented graphic designer Eleanor Lutz, whose creations EH Science has had the great pleasure of featuring on several occasions. Don't miss her infographics entitled Planet Earth’s Control Panel, How Muscles Work, and Breathing Infographic. Seriously, you don't want to miss them!

Winter Hack: New Rubber Grips Icy Surfaces

(Reza Rizvi, Yue Li, and Sharon Ravindran/
Toronto Rehabilitation Institute)
Winter storms dumped record amounts of snow on the East Coast and other regions of the United States this year, forcing many people to navigate icy sidewalks and roads. However, treacherous travel by foot may soon be a thing of the past thanks to a team of researchers from the Toronto Rehabilitation Institute and the University of Toronto, Canada, who are working on a new rubber sole to help pedestrians get a better grip on slippery surfaces.

Methane-munching Microbes Limit Global Warming

(Photo courtesy of NOAA Okeanos 
Explorer Program, 2013 Northeast U.S. 
Canyons Expedition)
Methane, one of the most potent greenhouse gases, is constantly leaking out of holes on the ocean floor. Now, an international team of scientists have found that these “methane seeps” are home to unique communities of microbes that play an invaluable role in maintaining life on Earth.