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Tornado Hits Near Boston As Cold Air Invades U.S. Again

A tornado touches down north of Boston as another blast of colder-than-normal air invades the eastern U.S.

Scientists Begin Hi-Tech Quest for Arctic Sea Ice Answers

Automatic sensors will allow scientists to conduct a monitoring program to determine summer sea ice melt.

Win-Win Way Pinpointed to Aid Food Security & Climate

Scientists say they have found a way to feed billions of people, while reducing environmental stresses.

Picture This: Lucky Lightning Photo & Crazy Bug Swarm

Check out one lucky photo of a lightning strike, along with an apocalyptic-looking swarm of insects on radar.

Number of ‘Hot Days’ Are on the Rise: See Your City

“Hot days” are likely to happen much more often if we continue to pump CO2 into the atmosphere.

This Would be the Ultimate ‘Sunburn’ for Your Summer

One physicist says there's a 12 percent chance a major solar storm could hit the Earth in the next 10 years.

Why Do We Care So Much About El Niño?

The obsessive attention to the state of the latest El Niño comes from the major global impacts it can have.

6 Degrees: Costly Weather, Drought, Fires and the Heat

Extreme weather dominates the top climate stories that happened this week and there's a quiz too.

As Arctic Ice Melts, Polar Bears Find a New Menu

As Arctic ice, and access to seals living there, disappears, polar bears adapt to a land-based diet.

Picture This: Twin Waterspouts and Amazing Aurora

In this week's Picture This, we've got an amazing aurora Vine, a typhoon's mean eye, and twin waterspouts.

What’s Behind Super Typhoon’s Rapid Intensification?

Rammasun looked ragged after its trip over the Philippines, but became a Super Typhoon before hitting China.

Planet is Running a Temp: State of the Climate ‘Check-Up’

A new report -- the latest checkup on the health of the global climate system -- says the planet is running a temperature.

Fires in NW Territories in Line with ‘Unprecedented’ Burn

The wildfires searing the Northwest Territories could be a harbinger of things to come in a warming world.

Weather Disasters Have Cost the Globe $2.4 Trillion

A new report shows just how costly climate- and weather-related disasters are across the globe.

Six Months In and Sizzling California Sets Record

January-June 2014 was the warmest first half to a year in California, helping fuel the state's drought.

Polar Vortex or Not, Cooler Temps Invade Eastern U.S.

At the hottest point of the summer, a collision of air masses has sent cooler temps invading the eastern U.S.

Military Bases Face Hurdles in Climate Change Adaptation

The military is already looking at its climate change vulnerabilities but more needs to be done.

Another Quiet Season As Tornado Peak Passes

2014 was on a record-low pace for tornadoes. A busy June changed that, but we're still below normal.

Long Wait Continues as El Niño Lagging

Though conditions are still favorable for El Niño to develop, another month passes with no official declaration.

6 Degrees: Hot Summers, a Few Tornadoes & Cows, Pigs

Summers get hotter, tornado season fizzles, cow manure worsens methane, plan to cut CO2 and more.

Gallery

2013 Hurricane Season This season was the least active since 1982 and the sixth-quietest since 1950.