Astronauts on China's Tiangong station used artificial photosynthesis to turn CO₂ and water into oxygen and rocket fuel.
The Global Happiness Megastudy aims to recruit at least 30,000 volunteers from around the world to participate in short interventions designed to enhance happiness.
The researchers closely watched as a 40-nanometer-thick piece of platinum, suspended in a vacuum, self-heal nanoscale cracks.
Dr. Kelly Lambert's team found that rats eagerly jumped into the vehicles, enjoying both the journey and the destination.
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