A swimmer stops short of a red algae bloom at Sydney's Clovelly Beach on November 27, 2012, which closed some beaches for swimming including Bondi Beach for a period of time. While the red algae, known as Noctiluca scintillans or sea sparkle, has no toxic effects, people are still advised to avoid swimming in areas with discoloured water because the algae, which can be high in ammonia, can cause skin irritation. (Photo by William West/AFP Photo)

A man walks near a boat which has capsized due to strong winds in Istanbul on November 30, 2021. Strong winds continue to blow across Istanbul where the Bosphorus strait is temporarily closed to boat traffic. Four people were killed and dozens injured on Monday in Istanbul, which was hit by high winds. (Photo by Yasin Akgul/AFP Photo)

A porter runs behind a taxi carrying clients to Colombia's border with Venezuela in hopes of getting hired by the passengers to help carry their belongings across the border, which Venezuela partially closed seven years prior, in Cucuta, Colombia, early Monday, August 8, 2022. Colombia’s incoming foreign minister and his Venezuelan counterpart announced in late July that the border will gradually reopen after the two nations restore diplomatic ties. (Photo by Matias Delacroix/AP Photo)

Shakar Rustami (L) and Zulaikha Amini, organizers of the“'Smart Way” book and painting exhibition stand in front of painting in Kabul, Afghanistan, 21 August 2023. Young female artists in Kabul held a painting exhibition to express the restrictions imposed by the Taliban on women and girls. The exhibition also featured books displayed by students to promote reading culture. Some of the girls called for the Taliban to lift the restrictions against women and girls. Many female students turned to painting and drawing after schools and universities closed. (Photo by Samiullah Popal/EPA/EFE)

In a photo taken on July 6, 2017 soldiers of the Korean People' s Army (KPA) watch a fireworks display as part of celebrations marking the July 4 launch of the Hwasong-14 intercontinental ballistic missile, in Pyongyang Fireworks lit up the sky over Pyongyang' s Juche Tower as North Korea celebrated its launch of intercontinental ballistic missile, a milestone in its decades- long weapons drive. On July 4 – the United States' Independence Day – it launched a Hwasong-14 rocket that analysts and overseas officials said had a range of up to 8,000 kilometres, which would put Alaska and Hawaii within reach. (Photo by Kim Won-Jin/AFP Photo)

U.S. Marines, left, and South Korean Marines, wearing blue headbands on their helmets, take positions after landing on the beach during the joint military combined amphibious exercise, called Ssangyong, part of the Key Resolve and Foal Eagle military exercises, in Pohang, South Korea, Saturday, March 12, 2016. North Korea said Saturday its military is ready to pre-emptively attack and “liberate” the South in its latest outburst against the annual joint military drills by the United States and South Korea. (Photo by Kim Jun-bum/Yonhap via AP Photo)

These beautiful shots may look like works of modern art – but they are actually close-ups of chemical reactions. The works were snapped with the help of a group of scientists from the University of Science and Technology of China (USTC) in Anhui, China. Here: Zinc reacting with lead nitrate in a soft gel to form lead crystals. (Photo by Yan Liang/Caters News)

Ice covered leafs are pictured on a tree near Amstall in northern Austria, December 2, 2014. Freezing fog and rain covered parts of the region with ice, causing blocked roads due to fallen trees and closed schools for security reasons, local media report. (Photo by Heinz-Peter Bader/Reuters)