Anyone who shops at Costco is familiar with the many sample stations set up throughout the store, serving up unlimited hot and cold snacks and little bites. The chain makes serious money from giving ...

State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China State Key Laboratory of ...

NASA’s troubled Mars Sample Return program is stuck at a crossroads—and is likely to remain in limbo until at least 2026—agency officials said at a press briefing on Tuesday. To bring this ...

For nearly four years, NASA's Perseverance rover has journeyed across an unexplored patch of land on Mars—once home to an ancient river delta—and collected a slew of rock samples sealed inside ...