Alternative cement with low carbon footprint developed

Researchers at the Martin Luther University Halle-Wittenberg (MLU) in Germany and the Brazilian University of Pará have developed a climate-friendly alternative to conventional cement. Carbon dioxide (CO2) emissions can ...

Weathering rocks hold clues to Earth's Great Oxidation Event

About 2.4 billion years ago, Earth's atmosphere underwent what is called the Great Oxidation Event (GOE). Prior to the GOE, early Earth had far less molecular oxygen than we have today. After the GOE, molecular oxygen began ...

Earth's oldest stromatolites and the search for life on Mars

The earliest morphological traces of life on Earth are often highly controversial, both because non-biological processes can produce relatively similar structures and because such fossils have often been subjected to advanced ...

Cell aging can be slowed by oxidants

At high concentrations, reactive oxygen species—known as oxidants—are harmful to cells in all organisms and have been linked to aging. But a study from Chalmers University of Technology, Sweden, has now shown that low ...

page 8 from 40