This is Part 2 of a short series on efforts to decarbonize the global shipping industry. Part 1 discussed international policy and politics. This part looks at efficiency measures. Those in the ...

Northrop Grumman's Cygnus XL experienced main engine troubles that have hampered its resupply mission to the International Space Station, NASA said.

Two planned engine firings shut down prematurely, NASA said, putting the Cygnus cargo ship's approach on hold.