SPECIAL REPORT
PUT TING
HUMANS
ON MARS
The long trip,
surviving the surface,
and how to get back alivePLUS KOAL A DOC TORS / PL ANT THAT EATS SALAMANDERS /
PENTAQUARK PUZZLE SOLVED / EXTREME HYBRID HUMANA TREATMENT FOR ALZHEIMER’S
Could an arthritis drug be the solution?HOW MUCH
EXERCISE DO
WE REALLY
NEED?
The surprising new answer
rooted in human evolution
(Spoiler alert: it’s not 10,000 steps)
No3234 US$6.99 CAN$7.0 72440 30690 524Science and technology news http://www.newscientist.com US jobs in science
WEEKLY June 15–21, 2019