A massive tornado 1.6 km is on the ground in in El Reno, Oklahoma, one county west of Oklahoma City.
Dark skies and heavy rains sweep southern Ontario
Ontario's thunderstorm risk stretches into the weekend
The weather via the media: We are all in!
Tornadoes touch down in Oklahoma, Arkansas
Giant pink slug discovered in Australian mountains
400 year-old plants bloom as glaciers recede
Toronto issues first heat alert of the year
Barbara weakens to tropical depression after making landfall, killing two
Search to resume Thursday for man missing in Toronto's Humber River
Beaver kills fisherman in Belarus
Hayward Pools 101: Saving energy and money
5 Things You May Have Missed On Social Media This Week
Study finds that 1 in 13 people have chimp-like feet
Asteroid, nine times bigger than a cruise ship, to zip past Earth on Friday
Stormhunters continue their chase through tornado alley
The dangers of that perfect photo
Summer Outlook 2013
Angry bird attacks on Parliament Hill
Weather going from bad to worse: insurance boss
Powerful downburst causes property damage in Brampton, Ontario
Barbara strengthens into a hurricane
Experts saw Nepal quake coming
Experts knew the 80-year cycle of earthquakes in Nepal was due.
Clouds left by jets spark protests
They crisscross skies on a daily basis, sometimes lasting only seconds.
How to celebrate 25 yrs of a Space Telescope
The Hubble Space Telescope took up residence in Earth orbit on April 24, 1990, a...