NASA plans to send crewed missions to Mars^[1] over the next decade – but the 140 million-mile (225 million-kilometer) journey^[2] to the red planet could take several months to years round trip^[3].

This relatively long transit time is a result of the use of traditional chemical rocket fuel. An alternative technology to the chemically...

Citrus trees showing natural tolerance to citrus greening disease host bacteria that produce novel antimicrobials that can be used to fight off the disease, our recent study shows^[1]. We found the trees at an organic farm in Clermont, Florida.

Citrus greening disease – known more formally as Huanglongbing, or HLB^[2], is caused by the...

Out of 225 people awarded the Nobel Prize in physics^[1], only five have been women. This is a very small number, and certainly smaller than 50% – the percent of women in the human population.

Despite several studies^[2] exposing the barriers^[3] for women in science and the many efforts^[4] to increase their representation, physics continues...