The dinosaur and mammal engaged in a final tussle.

Rare Fossil May Show a Small Mammal Attacking a Dinosaur

The well-preserved bones could upend the traditional view of dinosaurs as predators and mammals as prey, if the findings are confirmed

Researchers estimate the states with the highest rates of Alzheimer's disease are Maryland, New York and Mississippi.

Here's Where the Highest Rates of Alzheimer's Are in the United States

A first-of-its-kind report estimates Alzheimer's disease prevalence in 3,142 counties across the nation

The research team stands alongside the SARS-CoV-2 wet cyclone aerosol sampler they developed.

New Device Can Detect Covid in the Air Within Five Minutes

Researchers report the technology is 77 to 83 percent accurate in finding any of the coronavirus variants in a room

Opill was first approved by the FDA about 50 years ago, but until now, users needed a prescription to access it.

FDA Approves First Over-the-Counter Birth Control Pill

Experts say the decision will increase access to safe and effective contraceptives for millions of Americans

Phytoplankton form swirls of green in the Barents Sea north of Norway. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite acquired this image on July 27, 2004.

Climate Change Is Shifting the Color of Earth's Oceans

More than half of our oceans have taken on a greener hue in the past 20 years, a trend that cannot be fully explained by natural variation, per a new study

Aerial view of Crawford Lake

This Canadian Lake Could Mark the Start of an Epoch Altered By Humans

With evidence of fossil fuels, nuclear weapons and a warming climate buried in its sediment, Crawford Lake represents the Anthropocene, scientists say

A sea lamprey

Bloodsucking Sea Lampreys Made a Comeback in the Great Lakes During Covid

Travel restrictions hindered population control of the invasive parasites, which feed on fish like trout, whitefish, perch and sturgeon

Floodwaters cover a street in the reemerging Tulare Lake, in California’s Central Valley, on April 14, 2023 in Corcoran, California.

California's Long-Dry Tulare Lake Has Returned

Record-breaking snowpack and storms have flooded hundreds of acres of agricultural land in the state's San Joaquin Valley

Threads is the latest app launched by Meta, which owns Facebook, Instagram and WhatsApp.

Meta's Threads Becomes the Most Quickly Downloaded App Ever

The Twitter competitor launched on Wednesday and already has more than 70 million sign-ups, per CEO Mark Zuckerberg

July 4, 2023 was the Earth's hottest day ever, breaking the record set one day earlier. The heat continued into Wendsday, July 5.

Earth Faces Hottest Day Ever Recorded—Three Days in a Row

Researchers attribute the sweltering heat to a combination of human-caused climate change and El Niño, which has a global warming effect

Honeybees, which are not native to the United States, may be outcompeting native bees for pollen.

Pollination From Honeybees Could Make Plants Less Fit to Survive and Reproduce

Plants visited by honeybees rather than native bees may become more inbred, a new study suggests

A sea lion receiving care at the Pacific Marine Mammal Center in Laguna Beach, California, shows signs of domoic acid poisoning.

Algae Is Making Sea Lions More Aggressive in California

A toxin present in algal blooms is moving through the food chain, leading to the deaths of sea lions and dolphins

Brooding octopuses at a previously unexplored site in the Pacific Ocean, off the western coast of Costa Rica

Scientists Find Rare Deep-Sea Octopus Nurseries

The team captured footage of the eight-armed creatures brooding their eggs in groups near Costa Rica

Women in foraging societies may have been just as skillful hunters as men were, but researchers have historically dismissed their hunting contributions.

Early Women Were Hunters, Not Just Gatherers, Study Suggests

Regardless of maternal status, women hunted in almost 80 percent of recent and present-day foraging societies in a new study

A resident and his dog sunbath at Zilker Park on June 27, 2023 in Austin, Texas.

Heat Wave Gripping the Southern U.S. Will Spread This Week

Some areas may face a heat index as high as 120 degrees

An illustration of the Victorian grassland earless dragon, which, until February, had not been seen in the wild since 1969.

Scientists Find the 'Extinct' Victorian Earless Dragon, Not Seen Since 1969

Once thought to be gone from the wild, the lizards will now enter a breeding program in an attempt to save them from the brink of extinction

A giant African land snail

Giant Snails Take Over Part of Florida—Again

Officials issued a quarantine to control the invasive species, which devours vegetation, damages structures and can carry a parasite dangerous to humans

A woman drinking water on a hot day in Kolkata, India, in April 2023.

Extreme Heat Wave Hits India

In recent days, nearly 200 people have died across two of the country's most populous states

Red knots feed on horseshoe crab eggs along the shore at Mispillion Harbor, Delaware.

Red Knot Shorebird Numbers Rise in New Jersey

An independent survey counted 22,000 of the federally threatened birds, up from a historic low of 6,880 in 2021

Tori Bowie at the 2016 Olympic Games

What Is Eclampsia? Olympian Tori Bowie May Have Died From the Rare Pregnancy Condition

The 4x100 gold medalist died in May, bringing attention to high maternal mortality rates among Black women in the United States

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