Tropical Storm Matthew strengthened to a hurricane on Thursday, but there's still a lot of complexity in its forecast.
Tropical Storm Matthew could become a strong hurricane
Megi, fourth typhoon to impact Taiwan this season
By 2100 all of Earth's wilderness is expected to disappear
Elon Musk lets us in on his plans for putting humans on Mars
Scientists are using social media to determine air quality
How much did the largest squash on record to date weigh?
The first known instance (in print) of trick-or-treating took place in Blackie, Alberta in 1927.
Fall in Alberta: Photo by Christy Turner