An effective nasal vaccine could stop the virus that causes COVID-19 right at its point of entry. But devising one that works has been a challenge for researchers.

Fortifying foods with new polymer particles containing vitamin A could promote better vision and health for millions of people.

China’s international lending projects have big potential impacts on oceans and coasts. By cooperating more closely with host countries, Beijing can make those projects more sustainable.

Two interlinked studies, involving 8,000 primary pupils altogether, indicate children lost at least a third of a year in learning during lockdown.

Using a Nobel Prize-winning technique called cryo-EM, researchers were able to identify potential areas on the hepatitis C virus that a vaccine could target.

Associate Professor Mai Hassan documents bureaucratic systems in Eastern Africa set up for coercion, as well as roadblocks to democratic government.

It’s a landmark agreement, acknowledging for the first time that wealthy countries bear some responsibility to help. But it leaves many unanswered questions.