Police personnel march during the Republic Day Parade in Amritsar on January 26, 2021. (Photo by Narinder Nanu/AFP Photo)

Snow covered pine tree reaches for the sky. Shot in Sweden on a crisp winter day. (Photo by Anna Rebecka Lindberg/The Guardian)

A mahout splashes water on his elephant on a hot summer day in Ahmedabad, India on April 8, 2019. (Photo by Amit Dave/Reuters)

Girls bath inside a drum on a hot summer day at a field in New Delhi, April 18, 2017. (Photo by Adnan Abidi/Reuters)

A man and a woman take a selfie on Russian Navy Day in St Petersburg, Russia on July 26, 2020. (Photo by Roman Pimenov/TASS)

People pass by a light decoration during Valentine’s Day in Tirana, Albania, on February 14, 2024. (Photo by Florion Goga/Reuters)

Undulatus asperatus (or alternately, asperatus) is a cloud formation, proposed in 2009 as a separate cloud classification by the founder of the Cloud Appreciation Society. If successful it will be the first cloud formation added since cirrus intortus in 1951 to the International Cloud Atlas of the World Meteorological Organization. The name translates approximately as “roughened or agitated waves”.

When Stu Thomson (Cut Media) and Danny MacAskill approached us (Santa Cruz Bicycles) with the idea of being the first to tackle the Black Cuillin ridge on a bicycle, we were in from the start. Located on the Isle of Skye (Danny’s home on the west coast of Scotland) the ridge is infamous for its jagged trails, wild weather and dramatic climbing route up the “Inaccessible Pinnacle”.