MIT Technology Review

• Mars may not have been the warm, wet planet we thought it was

• Software that monitors students during tests perpetuates inequality and violates their privacy

• “Am I going crazy or am I being stalked?” Inside the disturbing online world of gangstalking

• How falling solar costs have renewed clean hydrogen hopes

• The pandemic has changed how criminals hide their cash—and AI tools are trying to sniff it out

• A guide to the TikTokish apps that want to be the next TikTok