New Scientist1d
Millions of phones create most complete map ever of the ionosphere
Researchers mapped Earth’s ionosphere, part of the upper atmosphere, using signal data from 40 million phones – a method that ...
Popular Science1d
Google used millions of Android phones to map the worst enemy of GPS
That region of the Earth’s atmosphere called the ionosphere can contain varying levels of free electrons that ... they were ...
New Scientist2d
Migratory birds can use Earth's magnetic field like a GPS
Eurasian reed warblers don’t just get a sense of direction from Earth’s magnetic field – they can also calculate their ...
Nature2d
Google uses millions of phones to map Earth’s ionosphere and improve GPS
When the air is partly ionized, freely moving electrons slightly slow down the radio signals travelling to Earth from GPS and ...