McGraw-Hill Education

Wave Power

November 22, 2017 btwuser 0

You’ve heard of solar power and wind-generated power. But what about power that comes from ocean waves? That’s right: the U.S. government is spending up […]

Goodbye Cassini

September 20, 2017 btwuser 0

After 20 years in space, and 13 years orbiting Saturn, the Cassini spacecraft’s mission ended dramatically last Friday. Here, btw takes a look at why […]

Magaliesburg, South Africa, Thursday, Sept. 10, 2015. photographer/AP Images. Photographer: Themba Hadebe. Magaliesburg, South Africa

Meet Homo Naledi

September 21, 2015 btwuser 0

Earlier this month, paleoanthropologists in South Africa announced that they have discovered a new species of hominid. Hominid is the name of the biological family […]