288 articles from TUESDAY 18.5.2021

Linguistic and biological diversity linked

Cultural diversity -- indicated by linguistic diversity -- and biodiversity are linked, and their connection may be another way to preserve both natural environments and Indigenous populations in Africa and perhaps worldwide, according to an international team of researchers.

African rainforests still slowed climate change despite record heat and drought

Intact rainforests across tropical Africa continued to remove carbon from the atmosphere before and during the 2015-2016 El Niño, despite the extreme heat and drought. Theyl removed 1.1 billion tons of carbon dioxide per year from the atmosphere during the El Niño monitoring period. This rate is equivalent to three times the carbon dioxide emissions of the UK in 2019. Scientists were surprised...

Diamonds engage both optical microscopy and MRI for better imaging

Microdiamonds with nitrogen vacancy centers are increasingly used as biological tracers thanks to the optical fluorescence of NV centers. But the NV centers also can be spin-polarized by low-power lasers, and the polarized centers then polarize nearby carbon-13 atoms occurring naturally in the diamonds. These hyperpolarized C-13 atoms can be detected by NMR imaging. Chemists now demonstrate...