5,531 results
5,531 results for: Forests
- Materials Science
Melt-Resistant Metals: Carbon coating keeps atoms in order
Shrink-wrapped in carbon, nanoscale metal chunks melt at extraordinarily high temperatures, suggesting carbon coatings as a route to higher heat resistance for materials and devices.
- Earth
A Dam Shame? Project may slam China’s biodiversity
When the Three Gorges Dam begins to impound the waters of the Yangtze River in China later this year, dozens of mountains and other elevated areas upstream will become islands—an outcome that will probably devastate the rich diversity of species now living along the river.
- Health & Medicine
Flawed Therapy: Hormone replacement takes more hits
Elderly women taking estrogen and progestin are more likely to develop dementia, including Alzheimer's disease, and stroke than are women not taking the hormones.
-
Chopping up a microbial tail
An enzyme made by immune cells destroys the proteins that make up bacterial tails.
- Health & Medicine
Full-Length Pregnancy: Progesterone product may reduce premature births
A drug related to the female hormone progesterone helps some pregnant women who are prone to premature birth extend their pregnancies.
- Earth
Not So Green? Using hydrogen as fuel may hurt environment
Replacing fossil fuels with clean-burning hydrogen—considered to be a way to reduce globe-warming carbon dioxide—may create a different set of environmental problems, including larger and longer-lasting ozone holes.
- Astronomy
Solar Terrain: Revealing the sun’s complex topography
The sharpest images of the sun ever taken, released last week, show our stellar neighbor’s rugged surface in new and surprising detail.
- Earth
Satellites show Earth is greener
Daily observations from space for nearly 2 decades indicate that our planet is getting greener.
- Animals
City Song: Birds sing higher near urban traffic
Birds in noisier city spots tend to sing at a higher pitch than do members of the same species in quieter neighborhoods.
- Ecosystems
Shark Serengeti: Ocean predators have diversity hot spots
The first search for oceanic spots of exceptional diversity in predators has turned up marine versions of the teeming Serengeti plains.
-
Probing Ocean Depths: Photosynthetic bacteria bare their DNA
Scientists have deciphered the DNA of two highly abundant, photosynthetic ocean bacteria.
- Ecosystems
Risky High Life: Mountain creatures prove extra-vulnerable
Some of the species hardest hit by climate change will be those living in particular mountain highlands.
