DoorDash to buy Instacart for $17 billion in big consolidation for grocery delivery

Contractor to Civil Servant: NASA Welcomes Jared Spiers

Jared Spiers had an interest in contributing to NASA’s mission long before becoming a civil servant for the agency. Grow…

Using hydrogen to spark ammonia engines into life

"Ammonia was first used as a fuel during World War II, when gasoline was hard to get hold of," explains David Emberson, …

Saharan dust carries desert bacteria across the Atlantic to Amazon rainforest

Viewed under a microscope, the air above the Amazon rainforest teems with activity. It is full of pollen, fungal spores,…