2019-07-01_Discover

PACIFIC INDIAN AUSTRALIAN EURASIAN ANTARCTIC AFRICAN Somali Arabian Burma Philippine Caroline Sandwich Anatolia Yangtze Amurian ...

42 DISCOVERMAGAZINE.COM As the World Turns The theory of plate tectonics took shape in the 1960s after more precise seafloor map ...

JULY/AUGUST 2019. DISCOVER 43 Gondwana: Long-Lived but Only Somewhat Super When: Formed at least 550 million years ago; broke up ...

EVERYTHING WORTH KNOWING 44 DISCOVERMAGAZINE.COM F R O M T O P :^ Z IZ Z A G O R D O N W IL D L IF E C O L LE C TI O N /A L A M ...

JULY/AUGUST 2019. DISCOVER 45 C L O C K W IS E F R O M T O P :^ P A IM A G ES /A L A M Y S TO C K P H O TO ;^ B L U E O R A N G ...

Spin axis Radiation beam Beam rotates around spin axis. Magnetic field lines Neutron star Magnetic poles EVERYTHING WORTH KNOWIN ...

JULY/AUGUST 2019. DISCOVER 47 NICER Neutron Stars Astronomers are currently arguing (nicely) about what might be deep inside neu ...

48 DISCOVERMAGAZINE.COM Flight WHEN THE WRIGHT BROTHERS took to the skies in 1903, they were relative latecomers — insects alrea ...

JULY/AUGUST 2019. DISCOVER 49 Insects and the Origin of Flight Found in practically every niche on all seven continents, insects ...

50 DISCOVERMAGAZINE.COM C LO C K W IS E^ F R O M T O P L EF T :^ L EO B L A N C H E T TE /S H U TT E R ST O C K ;^ N A S A J O H ...

JULY/AUGUST 2019. DISCOVER 51 FR O M T O P :^ EN V AT O E LE M E N TS ;^ N E 2 P I/ S H U TT E R ST O C K ;^ N A S A /J P L C ...

52 DISCOVERMAGAZINE.COM EVERYTHING WORTH KNOWING 52 DISCOVERMAGAZINE.COM A ONE-MINUTE DOWNLOAD is all you need to access the int ...

JULY/AUGUST 2019. DISCOVER 53 Peeling the Onion On a normal network, every device — whether it’s a computer running software or ...

EVERYTHING WORTH KNOWING 54 DISCOVERMAGAZINE.COM Stress WHETHER ANIMAL, vegetable, mineral or machine, everything experiences st ...

JULY/AUGUST 2019. DISCOVER 55 Why So Stressed? Ancient organisms likely evolved the stress response to better escape from predat ...

56 DISCOVERMAGAZINE.COM STRESS EVERYTHING WORTH KNOWING As with people, excess stress can cause pathological disorders in animal ...

JULY/AUGUST 2019. DISCOVER 57 Seeing Stress in Action Stretch a plastic bag between two polarizers — screens that filter light w ...

2 ,^5 0 0 M a 4,540 Ma Formation of Earth 4,000 Ma First life 3,200 Ma Earliest start of photosynthesis 530 Ma Cambrian explosio ...

2 Ma First members of genus Homo M es oz oi c C e n o z o ic Ju ra ss ic C re ta ce o u s P a le o g e n e N e o g e n e Q u a t ...

EVERYTHING WORTH KNOWING 60 DISCOVERMAGAZINE.COM The Moon THE MOON IS EARTH’S CLOSEST, albeit inconstant, companion. Over the ce ...