More than 10 million dead trees are standing like tombstones along America’s Atlantic coast — scientists mapped vast “ghost forests” where seawater is creeping inland and turning living woodland into salt marsh
Scientists who read 16 years of radio tracking from three Mars orbiters say the mantle beneath the planet's southern highlands runs 200 to 400 degrees Celsius hotter, averaged over the whole depth of the mantle, than the mantle beneath the northern plains, an inference drawn from the way Mars flexes under the Sun across each Martian year