In its heyday some 6,000 years ago, a lake called Mega-Chad was the largest body of fresh water on the planet, with an area of 360,000 square km. A few hundred years later it's reduced to Lake Chad at only 355 square km, and an air of faded grandeur left.
Dramatic footage has been released of the rescue of two fishermen after their ship sank in rough seas off the coast of northern Norway. The video shows the men being saved from raging waters, winched from their inflatable lifeboat to a helicopter.
A tornado hit several villages in the Dnepropetrovsk region in Ukraine’s south this week. Locals reported that roofs were blown off, trees torn from the ground, and fish from the river covered the roads, adding they had never seen anything like it before.
Countering the popular belief that Australia is a scorching-hot island paradise, a video has emerged claiming that the chilly nights are freezing - literally. People online watched in disbelief as tap water turned into a standing icicle as it came out.
A mysterious giant vortex has appeared in Lake Texoma, between Texas and Oklahoma. The phenomenon shot on video appears to be draining the lake right in front of puzzled onlookers. The footage has caused a stir online.
A three-day heatwave in Pakistan has killed nearly 700 people, primarily in the southern province of Sindh. A state of emergency has been declared in hospitals, while army is being deployed to help stroke centers.
Rescue workers cleaning up the zoo in the Georgian capital, which was hit hard by a massive flood earlier this month, have found one of its missing penguins alive. The bird was hiding in the zoo, in the debris of the predators’ enclosure.
The US Mid-West and Great Lakes region have been battered by severe storms. A tornado hit Coal City, some 60 miles (97km) southwest of Chicago, injuring seven people, while five people had to be rescued in the state of Michigan.
Several Russian cities, including Moscow and Kursk, were partly flooded on Saturday. While streets turned into "rivers" as sewer systems failed to cope with the torrents of water, local authorities said that everything was "normal."