Earth and Human Activity
- Climate
Arctic algae show climate change
Sediment from Arctic lakes shows that much of the Northern Hemisphere has been warming for many decades.
- Humans
A diamond polish for ancient tools
People in Stone Age China may have used diamonds to polish their stone axes.
- Earth
Digging into a tsunami disaster
A powerful earthquake under the Indian Ocean changed Earth's surface and spin.
- Climate
A change in climate
Global warming may be wiping out some plants and animals or pushing them into new habitats.
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- Tech
Cold house, hot house, green house
Saving energy at home requires paying attention to the building's windows, walls, and roof.
- Climate
A dire shortage of water
Parts of the southwestern United States are in the middle of the worst drought in at least 500 years.
- Environment
A newspaper’s hidden cost
Getting a newspaper electronically would be much better for the planet than receiving the paper version.
- Earth
Distant quake changes geyser eruptions
An Alaskan earthquake changed the timing of geysers thousands of miles away.
- Environment
Alien invasions
Around the world, plants, animals, fungi, and other life forms are ending up in places where they don't belong.
- Environment
An ocean view’s downside
Population growth in coastal areas could threaten shoreline ecosystems.
- Tech
Drawing energy out of wastewater
Microbes in a fuel cell can generate electricity from plant and animal waste in water.
