Researchers say photo recognition could help scientists learn more about how seals move around.

Introducing Facial Recognition Software for Seals

A neural network, trained using thousands of photos of harbor seals, offers a noninvasive way of telling the pinnipeds apart

Struvite is a nuisance for wastewater treatment plants, as it can clog pipes and lines. But the crystal, which is high in phosphorous, nitrogen, and magnesium, makes an excellent slow-release fertilizer for seagrass.

Human Pee Might Just Be the Key to Saving Seagrass

Treating wastewater creates struvite—a nutrient-rich crystal that bolsters struggling seagrass beds

Communist revolutionary Rosa Luxemburg speaking at a conference in Stuttgart, Germany, in 1907

The 20th-Century History of Anti-Semitic Attacks on Jewish Politicians

Russian rhetoric against Ukrainian president Volodymyr Zelenskyy echoes the language directed toward Jewish leaders in post-WWI Europe

Glowing green waters surrounded a boat in the Arabian Sea.

What Causes Swaths of the Ocean to Glow a Magnificent Milky Green?

A sailor who witnessed the rare phenomenon in person and a scientist who saw it from the sky team up to learn about the ghostly light

Royal kombu (aka sugar kelp) harvested from the Netherlands’ first organic seaweed farm enriches and flavors the Dutch Weed Burger’s soy-chip-based patty.

Is Seaweed the Next Big Alternative to Meat?

From kelp burgers to bacon of the sea, sustainable food entrepreneurs are innovating to charm hungry omnivores

The Earth’s oceans have risen and fallen over the millennia. But they have, on average, been relatively stable over billions of years. The balance of the deep water cycle—the exchange of water between the Earth’s surface and its interior—has an important role to play in maintaining that stability.

How the Earth's Mantle Sends Water Up Toward the Surface

A new model suggests "mantle rain" ensures we will always have a surface ocean

Participants in First Nature Tours help mitigate damages from wildfires in Central Oregon.

Regenerative Tourism Invites Travelers to Get Their Hands Dirty

Vacations that allow tourists to participate in conservation activities, such as habitat restoration, are growing in popularity

Vassily Maximov, A Sorcerer Comes to a Peasant Wedding, circa 1875

In Early Modern Russia, the Majority of Accused 'Witches' Were Men

Orthodox Russians deployed magic for practical purposes, like inflicting illness, harming business competitors and attracting lovers

Blue holes, like the Great Blue Hole in Belize, are vast caverns that descend into the seafloor. Sediment accumulates at the bottom of a blue hole, giving researchers a way to gauge historical hurricane activity.

Blue Holes Show Hurricane Activity in the Bahamas Is at a Centuries-Long Low

Many more powerful storms battered the region in the past

Smart windows that tint in response to stimuli such as heat or light, or a user’s preference, are becoming more common, but it may be a while before the tech is mainstream.

What Will It Take for Smart Windows to Go Mainstream?

Specialized glass that keeps heat in during winter and lets it out during summer could make buildings much more efficient

The book included reader-supplied recommendations for clubs and baths in countries such as South Africa, Yugoslavia and Panama. Two-thirds of the 1965 edition, though, were devoted to the U.S.

Where Could Gay Men Dine in the 1960s South? This Coded Guide Held the Answers

For locals and tourists alike, the "International Guild Guide" identified places of refuge in a ruthlessly homophobic society

Chilean devil rays swim in the Atlantic Ocean near the Azores. 

What Are Scientists Learning About the Deepest Diving Creatures in the Ocean?

Animals-turned-oceanographers are helping biologists find out what they do when they get to the cold, dark depths

A baby receives a mallaria vaccine from a nurse at the maternity ward of the Ewin Polyclinic in Ghana in 2019.

Why Did It Take 35 Years to Get a Malaria Vaccine?

The parasite’s complex biology played a role in the delay, but experts say there was also a lack of urgency and funding

Recreational fishers have discovered a new way to scout for fish and cast a line.

Is Fishing With a Drone the Way of the Future?

Not everyone is on board. The technology is dividing the fishing community and drawing the ire of some politicians and scientists

Li Shiu Tong and Magnus Hirschfeld at the 1932 conference for the World League for Sexual Reform

The Gay Asian Activist Whose Theories on Sexuality Were Decades Ahead of Their Time

In the 1930s, Li Shiu Tong's boyfriend, Magnus Hirschfeld, was a prominent defender of gay people. But Li's own research has long been overlooked

The House of Slaves on Senegal’s Island of Gorée is one of 284 significant African coastal sites included in a recent assessment of climate risk.

Climate Change Threatens Important African Coastal Sites

Dozens of important cultural, social, and ecological places are already at risk from climate hazards.

Last September, an installation of almost 700,000 white flags on the National Mall paid tribute to the Americans who have died of Covid-19.

The Civil War Drastically Reshaped How Americans Deal With Death. Will the Pandemic?

Around 750,000 people died during the conflict—2.5 percent of the country's population at the time

Horses have shaped human history over millennia, just as humans have influenced their evolution

When Did Humans Domesticate the Horse?

Only recently have scientists discovered exactly when and where the animal went from wild to tame

On the island of Dejima, European traders could interact with the Japanese, but with a few (carefully escorted) exceptions, they were barred from continuing on to mainland Japan.

The Wild West Outpost of Japan's Isolationist Era

For two centuries, an extreme protectionist policy barred foreigners from setting foot in Japan—except for one tiny island

Some seagrasses are linked to lower levels of gastroenteritis-causing pathogens in the water. 

Seagrass Can Work as a Sanitation Service

Millions of cases of potentially deadly gastroenteritis are prevented each year because of the pathogen-reducing powers of the plant

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