Future Mars astronauts may chomp on Earth's tiniest flowering plant to survive

Watermeal is Earth’s smallest flowering plant found floating in pinhead-sized clumps. It could have a big impact on space exploration, providing food and oxygen for future astronauts.

Future Mars astronauts may chomp on Earth's tiniest flowering plant to survive
Watermeal is Earth’s smallest flowering plant found floating in pinhead-sized clumps. It could have a big impact on space exploration, providing food and oxygen for future astronauts.