Saying students are getting only one side of the debate, a state senators wants to free teachers to tell students why they believe there is no such thing human-caused "global warming.''

Ryan Biggs' Feb 12 article concerning the heat island effect was interesting and timely. A recent study on the efectiveness

An ozone health watch has been issued for Friday by the Arizona Department of Environmental Quality.

Storms in recent days have brought temperatures down a notch, but no matter how the month is sliced this is still one of the hottest Julys on record.

With a heat wave causing an around-the-clock ordeal outside, it’s a wonder that so many across the Valley are venturing outdoors. A conservatively reported 5,000 people — likely more — visited a regional attraction at the Phoenix Zoo Saturday that boasted more than 60 tons of processed snow.

This heat wave has turned into an around-the-clock ordeal. Following one of the warmest nights in Valley history, the National Weather Service has declared an excessive heat warning effective through the weekend. Daytime highs are forecast to peak around 115 degrees. 

This stretch of mild weather is coming to an end - but summer thunderstorms may be soon to start.

Daytime, nighttime, any time - last month was one of the hottest Mays in the Valley's reported climatological history.

Feel as if it's getting too hot too soon? Blame the Valley's growth.

A wet storm is approaching in time for one of the year's busiest travel days, and meteorologists are narrowing down their predictions about the intensity and timing.

After a long, hot summer that refused to die, what's better than a cool-down? How about even colder weather?

After a long, hot summer that refused to die, what's better than a cool-down? How about even colder weather?

For all the havoc wreaked by the thunderstorms of August, they didn’t set any records.

The heavy rains that swept into the Valley Thursday night added a good soaking to what is already one of the area’s wettest monsoons in recent years. With more than an inch of rain dropping in some places Thursday, the Valley has registered above-average rainfall for only the second time this decade.

The 2008 monsoon season already has given the Valley an above-average amount of rainfall, and there's still plenty of time left on the clock.

2008's first triple-digit temperature was late in getting here, but making up for it is the heat's intensity.

Wet winters in Arizona bring about the blessings of full reservoirs and pretty wildflowers. But that rain also carries the curse of wildfires and, currently, allergy problems.

Imagine a killer heat wave in Arizona. Now add to that a power outage across the West. This nightmare scenario was presented Wednesday during a meeting of experts from the fields of meteorology, public health, the environment and urban planning.

Imagine a killer heat wave in the Arizona. Now add to that a power outage across the West.

Despite all of their scientific knowledge, National Weather Service officials were unable to forecast the storm of controversy they would kick up by proposing to scrap the term “monsoon” in Arizona.

Leave an empty water glass outside during the next few days, and there’s a good chance it’ll be half-full. But will the rain and snow forecast to fall on Arizona make a dent in the drought?

Extended forecast: Unbearable heat, diminishing water supply, more frequent and devastating wildfires, eradication of indigenous plants and animals. It’s not an absolute certainty, but it’s not science fiction, either, say scientists studying the impact of global warming on the Valley.

Extended forecast: Unbearable heat, diminishing water supply, more frequent and devastating wildfires, eradication of indigenous plants and animals. It’s not an absolute certainty, but it’s not science fiction, either, say scientists studying the impact of global warming on the Valley.

Matthew Pace doesn’t seem to notice his love of contradictions. He mounted cutting-edge technology on his fully restored 1969 Volkswagen bus. He loves rushing water — and the desert. But he knows how to make it work for him, and for Gold Canyon.