News

One-third of all slavery is visible from space

Advances in satellite imagery are shining a light. By Matt Davis –  – Today, there are 40.3 million slaves on the planet, more than the number of people living in Canada. Slavery can be hard to find, but it commonly occurs in several …

 

Another use for your unwanted eggshells – energy storage

By Ben Coxworth – – Researchers study the eggshell material, with some help from a scanning electron microscope. (Credit: Daniel Messling, HIU/KIT). They’ve been used as a rubber additive, a carbon-capture medium and a bioplastic ingredient. Now, discarded eggshells may have yet another use. …

Cahokia: North America’s massive, ancient city

It was a sprawling civilization. By Matt Davis –  – Near modern-day St. Louis, Missouri, you can find towering mounds of earth that were once the product of a vast North American culture. Cahokia was the largest city built by this Native American …

Electric Mountain Cart takes disabled riders off-road

By Paul Ridden – – The EV4 Mountain Cart was developed with input from a disabled extreme athlete, and has been tested in snowy Polish mountains and on jump tracks. (Credit: EV4). Jack Skopinski’s rivet-packing electric trikes and four-wheelers like to tilt. It’s become something …