Latest Chalcogens Stories
Fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands show that the Spanish archipelago off the northwest coast of Africa has become progressively drier over the past 50,000 years.
HOUSTON, Oct. 5 /PRNewswire/ -- PAC, a leading global provider of advanced analytical instruments for laboratories and online process applications, announces the introduction of the ANTEK MultiTek(TM) testing system for the fast, accurate detection of sulfur, nitrogen, and halides.
Danish-led scientists say an analysis of rock found only in the world's oldest oceans has shed light on how large animals obtained a foothold on Earth. The team led by University of Copenhagen Professor Robert Frei said it has, for the first time, plotted the rise and fall of oxygen levels in the Earth's atmosphere that occurred during the last 3.8 billion years. By analyzing the isotopes of chromium in iron-rich sediments formed in the ancient oceans, the team found a rise in atmospheric...
Analysis of a rock type found only in the world's oldest oceans has shed new light on how large animals first got a foothold on the Earth.
Higher selenium levels in the blood may worsen prostate cancer in some men who already have the disease, according to a study by researchers at Dana-Farber Cancer Institute the University of California, San Francisco.
Prairie dogs may seem like harmless little creatures, but they can inflict serious injury on plants simply by snacking on them. Plants cannot flee from their furry predators, so how do they avoid becoming a prairie dog's lunch?
From balloons to rubber bands, things always break faster when stretched. Or
- Withering but not falling off, as a blossom that persists on a twig after flowering.