Depth in feet to which scientists in Iceland drilled into a volcano to access heat energy. The hole is the deepest of its kind ever made.
Numbers in the News
LA MTA (SKELETON); STUART DEE/GETTY IMAGES (MASTODON)
Mastodon skeleton and illustration (See "10,000" below)
15,285
10,000
Age in years of a mastodon skeleton recently unearthed during an expansion of the Los Angeles subway system.
2,200
Approximate number of ring-tailed lemurs remaining in the wild, according to new studies. The population has declined 95% since 2000.
265
Height in feet of Africa’s tallest known tree, recently found on Mount Kilimanjaro.
125
Number of years since the founding of the Sierra Club, the largest outdoor recreational and environmental organization in the U.S.
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