Earth | Knowridge Science Report

Dinosaurs were warm-blooded, says new study

Dinosaurs were warm-blooded, according to a new technique that analyzes the chemistry of dinosaur eggshells. “Dinosaurs sit at an evolutionary point between birds, which are...

Not all BPA-free products are safe, study shows

In a new study, researchers found that using "BPA-free" plastic products could be as harmful to human health -- including a developing brain --...

As groundwater depletes, arid American West is moving east

Even under modest climate warming scenarios, the continental United States faces a significant loss of groundwater - about 119 million cubic meters, or roughly...

The world’s ‘chemical diversity’ tripled in just 20 years

There are 350,000 chemicals available on the market and in circulation worldwide, according to a new estimate. The last time researchers compiled a list, it...

One-third of plant and animal species could be gone in 50 years

Accurately predicting biodiversity loss from climate change requires a detailed understanding of what aspects cause extinctions, and what mechanisms may allow species to survive. A...

Were dinosaurs warm blooded? Their eggshells say yes

A Yale-led study turns up the heat on a key question about dinosaurs’ body temperature: Were they warm-blooded or cold-blooded? According to a new technique...

Next generation of greenhouses may be fully solar-powered

Many greenhouses could become energy neutral by using see-through solar panels to harvest energy –- primarily from the wavelengths of light that plants don't...

When frogs die off, snake diversity plummets

Since 1998, scientists have documented the global loss of amphibians. More than 500 amphibian species have declined in numbers, including 90 that have gone extinct,...

Common dental floss may increase these toxic chemicals in your body

PFAS chemicals are used in a range of consumer products, including fast food packaging, non-stick pans, waterproof clothing, and stain-resistant carpets. People can be exposed...

Ancient Antarctic ice melt increased sea levels by over 3 meters — and it...

Mass melting of the West Antarctic Ice Sheet was a major cause of high sea levels during a period known as the Last Interglacial...

Human activity contaminated Himalayan glacier long before people arrived, study shows

Scientists found byproducts of coal combustion in a glacier on one of the world's highest peaks. The finding shows human activity, likely from Europe,...

‘Reverse fuel cell’ could convert waste carbon into valuable products 10 times faster

Researchers develop enhanced device to transform CO2 into valuable chemicals 10 times faster than previous versions. Fuel cells turn chemicals into electricity. Now, a University of...