Sky full of cotton wool ball clouds that look like they’re ‘from another planet’ stun residents in Argentina as beautiful Mammatus formation appears on overcast day

An unusual weather phenomena wowed residents in Argentina due to the rare cloud formation that looked like a series of giant balls of cotton wool.

The overcast sky changed to Mammatus clouds last week over Casa Grande, Cordoba .

The weird cloud formation, while looking beautiful, can warn of potentially violent thunder storms.

People viewing the video described the clouds as ‘marshmallows’, ‘cotton wool’ and ‘freaky’.

Viewers were amazed at such a mesmerising sight. ‘Those are the prettiest clouds I have ever seen,’ a user commented. Some called them, ‘Marshmallow clouds’.
Mammatus clouds often form on the base of storm clouds but can be associated with other types of clouds as well. It is described as “in essence an upside-down cloud.”

Mammatus clouds most often signal that a storm is on a weakening trend. These clouds are formed in part by sinking air.

Millions of red crabs have begun the long journey marking their annual migration to the coast of Christmas Island.

The migration begins with the first rains of the wet season on Christmas Island, an Australian territory in the Indian Ocean.

Each year, it takes months of preparation by Christmas Island National Park staff to set up miles of road barriers and signs to ensure that the crabs pass over specially constructed bridges.

The speed of the migration depends on the phase of the moon, as red crabs always spawn before dawn on a falling high tide during the last quarter of the moon, according to Parks Australia.

The crabs move in large numbers from their forest to the sea.

Parks Australia expects spawning to occur toward the end of the month.

Each female crab can release up to 100,000 eggs into the ocean.

The resulting baby crabs are expected to return to shore a month later and return to the forest.

Matt Damon has some big-name endorsers for a book he has out March 1 about access to safe water.

Former President Bill Clinton and Nobel Peace Prize-winner Muhammad Yunus are among those providing blurbs for “The Worth of Water,” which the Oscar-winning actor and filmmaker worked on with civil and environmental engineer Gary White.

Damon has been a prominent spokesman for water sanitation since visiting Zambia in 2006, and with White founded the nonprofits Water.org and WaterEquity.

Damon and White met at a Clinton Global Initiative gathering in 2008.

“We’re excited to have written this book together, and we can’t wait to share the story of what happens when a movie actor and a civil engineer team up to try and take on the global water crisis — the stumbles and obstacles, the breakthroughs and big gains, and the incredible people we met along the way,” Damon and White said in a statement Tuesday.

“Our journey has proved two things: one, solving the water crisis is possible — within our lifetimes. And two, the key is unleashing the incredible determination and resourcefulness of the people who are fighting every day for essentials like safe water and sanitation.”