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Early humans relied on simple stone tools for 300,000 years in a changing east African landscape

Horses can smell human fear when we sweat

The world's first room-temperature continuous-wave UV-B laser diode on a sapphire substrate

Sniffing out cancer: Trained dogs can detect hemangiosarcoma by scent

Saturday Citations: Super-Earths; superagers; how we grieve pets

Mobile app forecasts future vineyard climates to help winegrowers adapt to change

US to repeal the basis for its climate rules: What to know

Things to know about the High Seas Treaty as it takes effect

NASA's new moon rocket heads to the pad ahead of astronaut launch as early as February

Study separates human and hydrological causes of nitrogen loss in Mississippi Basin

Higher farm productivity linked to slower growth in agricultural emissions

Molecule deposition on 2D materials promotes defect healing and quality restoration

Dallas greenhouse gas emissions fall below 2015 levels, city data show

Is California really 100% drought-free for the first time in 25 years? Yes and no: Here's why

Tiger sharks gather to mate during Maui's whale season, finds research

New interactive map models dust exposure from shrinking Great Salt Lake

Neutralizing extracellular electron transport disarms antibiotic-resistant bacteria, restores healing in chronic wounds

Imaging technique captures ultrafast electron and atom dynamics in chemical reactions

Most beef cattle in South America experience hundreds to thousands of hours of heat-related discomfort each year: Study

Scientists transform enigmatic cell structures into devices for recording RNA activity

Exploring the multifaceted effects of inward foreign direct investment on new venture creation

Temperature shifts alter honeybee behavior but leave native bees unchanged

Nationwide racial bias shapes media reporting on gun violence, study suggests

New temperature record challenges extreme high-latitude warmth paradigm

Cells use dual strategies to fine-tune inflammatory gene activation

Organic solvents enable chirality control in inorganic crystals

Australian freshwater fish like to dine out, relying on land-based food sources

Is feeding birds and other wildlife a good thing or a bad thing?

Revealing the cell's nanocourier at work

Protected forests under threat in DRC's lucrative mining belt

Honeycomb lattice sweetens quantum materials development

Sharks are famous for fearsome teeth, but ocean acidification could make them weaker

Climate and land-use changes projected to raise nitrogen pollution in rivers

Australia needs a canine brain bank to reduce the risk of dog attacks

In the most cleared state in Australia, Victoria's native wildlife needs our help after fires

Why restoring nature can work so much more effectively when led by local people

Iran: How the Islamic Republic uses internet shutdowns as a tool of repression

Tiny titans of recovery: Fossil burrows reveal resilient micro-ecosystem after global mass extinction

How actin wavefronts rescue T cell receptors from endocytosis

Plant diversity shapes chemical communication in ecosystems

New map reveals a rugged world beneath the Antarctic ice sheet

Sideways discovery rewrites the rules of antigen presentation

Opinion: China's new condom tax will prove no effective barrier to country's declining fertility rate

Global power struggles over the ocean's finite resources call for creative diplomacy

Marine mammal social lives shape how diseases spread in the ocean

When tropical oceans were oxygen oases

Exploring mutations that spontaneously switch on a key brain cell receptor

Biomass-derived furans offer sustainable alternative to petroleum in chemical production

When employees feel slighted, they work less, research reveals

Understanding the unusual chirality-driven anomalous Hall effect via scattering theory