The heart is the vital organ that moves oxygenated blood through your body, making life possible.
From spinal stimulation to exoskeletons, technologies for overcoming paralysis have come a long way in the 10 years since Christopher Reeve died.
Humans are just the latest in a long line of hominid species that have emerged in the past six million years.
Dec. 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere and marks the beginning of winter.
The U.S. and China produce more total e-waste than any other country, according to a new map that tracks e-waste around the world.
The IPCC's 2013 report presents the strongest case yet that humans are responsible for the changes in the Earth's environment.