What caused the ice ages? Tiny ocean fossils offer key evidence

The last million years of Earth history have been characterized by frequent “glacial-interglacial cycles,” large swings in climate that are linked to the growing and shrinking of massive, continent-spanning ice sheets. These cycles are triggered by subtle oscillations in Earth’s orbit and rotation, but the orbital oscillations are too subtle to explain the large changes […]

Large, delayed outbreaks of flu, other diseases possible following COVID-19 controls

Measures to reduce the spread of COVID-19 through non-pharmaceutical interventions (NPIs) such as mask wearing and social distancing are a key tool in combatting the impact of the ongoing coronavirus pandemic. These actions also have greatly reduced incidence of many other diseases, including influenza and respiratory syncytial virus (RSV). Current reductions in these common respiratory […]

Tighter border policies leave migrants vulnerable to effects of climate change

As the planet continues to warm, people living in the world’s most vulnerable regions — like arid or low-lying nations — must contend with the decision to stay in a place where livability is decreasing or leave for countries with more stable climate and economic conditions. New Princeton University research suggests that restrictive border policies could increase […]

Novel drug could be a powerful weapon in the fight against malaria and toxoplasmosis

Princeton researchers are making key contributions toward developing a promising new treatment for the widespread and devastating diseases toxoplasmosis and malaria. The Princeton scientists specialize in preparing the drug compound into a medicine that is both safe and effective for humans and able to reach its intended sites of action in the body in sufficient […]

Exploding stars may have caused mass extinction on Earth, study shows

Imagine reading by the light of an exploded star, brighter than a full moon – it might be fun to think about, but this scene is the prelude to a disaster when the radiation devastates life as we know it. Killer cosmic rays from nearby supernovae could be the culprit behind at least one mass […]