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- Humans
Science News of the Year 2000
A review of important scientific achievements reported in Science News during the year 2000.
By Science News - Planetary Science
Martian leaks: Hints of present-day water
In some of the coldest regions on Mars, water appears to have recently gushed from just beneath the surface, running down crater walls and steep valleys.
By Ron Cowen - Earth
Why the Mercury Falls
Certain pollutants can foster the localized fallout of mercury, a toxic heavy metal, from the atmosphere.
By Janet Raloff - Earth
Climate’s Long-Lost Twin
New geological evidence suggests that humans have started exploiting fossil fuels and altering Earth's atmosphere at precisely the moment when greenhouse gases could do the most damage to climate.
- Humans
From the December 17 & 24, 1932, issues
BEAUTY FROZEN IN GLASS SERVES CAUSE OF SCIENCE Gems as fantastically beautiful as any that have ever glittered in dreams of a frosty Christmas fairyland are being made in glass for the American Museum of Natural History by Herman Mueller, reputed to be the world’s most skillful glassblower. They are not mere conventional designs, however, […]
By Science News - Humans
From the December 17 & 24, 1932, issues
BEAUTY FROZEN IN GLASS SERVES CAUSE OF SCIENCE Gems as fantastically beautiful as any that have ever glittered in dreams of a frosty Christmas fairyland are being made in glass for the American Museum of Natural History by Herman Mueller, reputed to be the world’s most skillful glassblower. They are not mere conventional designs, however, […]
By Science News -
A Rocky Start
A new origin-of-life theory holds that life began within the confines of iron sulfide rocks surrounding hydrothermal vents at the ocean bottom.
- Paleontology
Did Mammals Spread from Asia? Carbon blip gives clue to animals’ Eden
A new dating of Chinese fossils buttresses the idea than an Asian Eden gave rise to at least one of the groups of mammal species that appeared in North America some 55 million years ago.
By Susan Milius -
- Planetary Science
Odyssey’s Homer: Hints of water near both poles of Mars
Sensors on board the Mars Odyssey spacecraft have spied strong signs of ice buried near both poles of the Red Planet, exactly the regions where scientists previously had said that such frozen water deposits could exist.
By Sid Perkins - Anthropology
Humans in eastern Asia show ancient roots
Human ancestors lived in northeastern Asia about 1.36 million years ago, making it the oldest confirmed occupation site in eastern Asia.
By Bruce Bower - Planetary Science
Exploring the Red Planet
Searching for signs of subsurface water on the Red Planet and analyzing the elemental and mineral composition of surface rock, NASA's Mars Odyssey spacecraft begins its main mapping mission next month and may shed light on several enduring puzzles about the planet.
By Ron Cowen