Stories by Alexa Lim

Alexa Lim is an audio producer and writer. Follow Alexa Lim on Twitter @AlexaLim22

Heat Waves Are Breaking Records. Here’s What You Need to Know

From North America to South Asia, summer heat waves are becoming longer, stronger and more frequent with climate change.

Two SciAm editors duke it out to see if wormholes and multiverses could in fact exist.

Very high HDL cholesterol levels almost double your risk of heart problems.