Study: A quarter of adults don't want children -- and they're still happy

Intermittent fasting 'no magic bullet for weight loss' says new study

Study: Complexity holds steady as writing systems evolve

NASA is returning to Venus to learn whether the hot poisonous wasteland was ever habitable. Two new NASA missions (VERITAS and DAVINCI+) will use radar and a probe to learn about Earth's hard-to-study and potentially prophetic neighbor.