By Kristine Sabillo At least three people were killed in Madagascar over the weekend as Tropical Cyclone Dikeledi brought heavy rainfall and flooding to the island on its way to the African mainland,

A tropical storm was moving away from the French territory of Mayotte on Sunday after causing torrential rains and flash floods that killed three people in the Indian Ocean island of Madagascar.

Researchers have long known that islands are hotspots for species diversity. But, until recently, there weren't precise figures to quantify the diversity of plant life on islands. A study involving an international team of scientists has filled this gap.

Freezing Temperatures: A blast of Arctic air can be dangerous, especially when combined with blustery winds. Track cold weather in the United States here. Cold Weather Safety: Experts offer tips to protect against common health hazards in freezing temperatures.