Whenever a winter is exceptionally cold, the term "polar vortex" gets thrown around, causing many to wonder if it is a new weather phenomenon. Actually, the polar vortex is always with us – just usually with a lower profile.
Some of the most expensive tornadoes in American history have touched down in the past few years, leading researchers to wonder whether they're getting stronger. Are tornadoes really becoming more destructive?
Every time disaster strikes, one man's name arises alongside the obsessive news coverage: Nostradamus. According to some folks, the famed French seer has predicted many of the planet's gloomy twists and turns. What did he have to say about 2012?
Who likes getting caught in a downpour without an umbrella? Not this guy and not us. Are we ever going to achieve rainmaker status so we can dial up a few gentle showers one day and a blast of sunshine the next?
Inject heat, ash and fire into a spinning mass of air. Watch as a funnel of flames leaps from the ground, reaches for the heavens and then races forward to consume everything in its path. Is such a phenomenon possible?
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides from power plants, cars and factories. Find out how acid rain is produced, how it affects natural and man-made objects and how governments aim to reduce it.