National Geographic news25 天
Where were enslaved Africans taken from? The answer could be hidden in their bones.
Scientists have created a groundbreaking map of strontium isotopes found across sub-Saharan Africa—which could help descendants of enslaved people reconstruct their family histories. Strontium ...
C&EN29 天
Favoring the Originally Unfavored Oxygen for Enhancing Nitrogen-to-Nitrate Electroconversion
State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China Ability R&D Energy Research Centre, School of Energy and Environment, ...