Climate
- Climate
Scientists confirm ‘greenhouse’ effect of human’s CO2
Government scientists link directly, for the first time, a boost in warming at Earth’s surface to increasing levels of carbon dioxide. Much of that gas has been released by human activities, such as coal burning and gas-burning vehicles.
- Climate
Distant pollution may intensify U.S. twisters
A new study of one of the deadliest U.S. outbreaks of tornadoes sees a possible role for smoke. In this analysis, the smoke had come from fires burning in Central America.
- Plants
Desert plants: The ultimate survivors
Creosote, mesquite and other desert plants rely on different adaptations to thrive, even when no rain falls for an entire year.
- Climate
Fast sea level rise is a very recent change
Sea levels have been rising for more than a century. But that rise is now speeding up. That suggests that what is driving the rise — climate change — also has increased dramatically in recent years.
- Earth
Tides may regularly swamp many U.S. cities
As sea levels rise, many cities will begin to experience frequent and extensive flooding at high tides. In some areas — even Washington, D.C. — such flooding could become a weekly headache.
- Climate
Thunderstorms can generate powerful radiation
Thunderstorms don’t just hurl lightning bolts. Some churn out high-energy radiation that can be seen by spacecraft. This radiation offers scientists a glimpse of the inner workings of thunderclouds.
- Fossils
Tar pit clues provide ice age news
New analyses of insects and mammals trapped in the La Brea Tar Pits point to climate surprises during the last ice age.
- Animals
Climate change brings new neighborhood birds
Climate change has made winters a little bit warmer. Many bird species are now wintering a lot farther north than they did a few decades ago, a new study finds.
- Climate
The worst drought in 1,000 years
The 1934 drought, during a period in American history known as the Dust Bowl, was the worst in a millennium, a new study finds. While the drought had natural origins, human activities made it worse.
- Climate
Lightning strikes will surge with climate change
Warming temperatures will lead to 50 percent more lightning strikes across the 48 U.S. states in the next century, researchers report. That increase could lead to more warming, more fires and even more deaths.
- Climate
World leaders call for action on climate change
This week, the presidents of China and the United States pledged to take aggressive action on the release of greenhouse gases to head off dire worldwide climate effects.
- Environment
Will water woes leave Americans thirsty?
In the United States, people often assume that clean water will always be available. But factors ranging from global warming to pollution have begun threatening drinking-water supplies.
