Shaking it up: Maverick scientist dies

Shaking it up: Maverick scientist dies

Sometimes, scientists feel the need to leave the lab and warn the public about onrushing hazards. Rowland warned about ozone, but others are warning about warming. Does scientific culture encourage or hinder going public? Does the helpful response to ozone depletion suggest we’ll succeed in confronting global warming? More »

A Climate of Extremes

Detail from schematic diagram

Classroom Activity Page: Higher temperatures are only part of the climate change forecast. Are current extreme weather events a sign that warming is already here? What do climate models forecast for weather around the globe? Why is it so hard to predict the climate? More »

Ocean fish in hot water

Ocean fish in hot water

The ocean’s most valuable fish are caught in a vise. Areas known as dead zones are encroaching on their living zones and pinning them closer to the surface, where they are more vulnerable to becoming the day’s catch. The predicament is yet another side effect of climate change. More »

Do abundant snowstorms suggest global warming is not occurring?

Do abundant snowstorms suggest global warming is not occurring?

Do abundant snowstorms suggest global warming is not occurring? ENLARGE Graphic: Rutgers University Global Snow Lab This graphs shows the area of land covered by snow over the past few decades in North America. No. These storms are individual weather… More »

Tundra fire: Bad news on warming

line of fires seen as thick barrier of smoke along tundra landscape

The globe warms, and the Arctic starts to burn. If warming causes fires that release carbon dioxide, the primary greenhouse gas, will this accelerate further warming? A new study measures carbon releases from the largest tundra fire in North America. More »

Trash: Does burning beat burying?

Trash: Does burning beat burying?

Twenty-five years ago, trash incinerators were a major source of air pollution. In Europe today, cleaner incinerators are common and accepted, providing steam and electricity while reducing garbage to ash. If even the Euro-Greens can abide them, why are garbage incinerators so rare in North America? More »

I robot. Aye science!

I robot. Aye science!

Ocean technology on the move: 1: a robot sub smart enough to find stuff in the deep ocean 2: a metal fish glides for weeks under the ice 3: an electric sinker-bobber that never needs recharging 4: a research jet that flies miles above airliners. More »

A climate of extremes?

A climate of extremes?

Are extreme heat, wicked cyclones and record rainfalls signs of climate change, or just more changes in the weather? Will warming eliminate record cold days? Will hurricanes get bigger? More »

Is global warming real?

Is global warming real?

Is global warming real? Image: NASA Over the past two decades, the global average surface temperature has increased noticeably. This observed warming trend indicates a significant global change and is consistent with other observed changes on our planet: There is… More »

Buried charcoal: Global warming star?

Buried charcoal: Global warming star?
Buried charcoal stimulates microbes and plant growth, helping farmers on poor soil. Studies show that charcoal is stable for hundreds of years. More »

Tar sands = Clean oil?

Tar sands = Clean oil?

Canada’s oil-drenched sands are the second-largest oil reserves, but they pollute air and water, destroy forests and boost warming. A good idea? More »

Planetary limits: More than just global warming

Planetary limits: More than just global warming
Scientists propose 9 limits on human actions: Wrecking ozone, over-using fertilizer, killing species could block key “ecosystem services.” Are there natural limits to fresh water use and pollution? More »

Fertilizing the ocean

Fertilizing the ocean

As Earth warms, should we try huge geoengineering projects to cool the climate? Would adding iron to fertilize ocean plants withdraw enough carbon dioxide to slow warming — or backfire? More »