Uncategorized
- Earth
A different spin
A change in the properties of Earth's mantle at high pressure and temperature may influence seismic waves in a novel way.
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Exercise steps up as depression buster
Aerobic exercise, done alone or in a group, eases depression almost as well as a common antidepressant does.
- Planetary Science
Martian rovers survive storm
Three months after being stymied by a planet-wide dust storm, NASA's twin Mars rovers are back in action.
- Humans
It’s About Time
What’s a year? Why do we measure it in days and weeks? How do calendars differ? What’s the earliest known date? (Hint: It’s the year Egyptians invented the calendar.)
