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Japan is ageing faster than any other country in the world, boasting one of the highest life expectancies. Women typically live to 87 and men to 81. Almost 40% of its population is over 60, a figure expected to continue expanding as the population shrinks. Couples in Japan now have an average of just 1.3 children – far below the 2.1 children societies need to remain stable.Japan once placed its elderly at the top of the social hierarchy, even holding a national holiday to honour their contributions to society. But no…

An asteroid travelling much faster than a hypersonic missile has been observed heading for Earth today! Asteroids are ancient rubble left over from the early formation of our solar system about 4.6 billion years ago. Most of these space rocks can be found within the main asteroid belt between Mars and Jupiter. Interaction with a planet's gravitational field, especially Jupiter, can knock the asteroid off-its orbit and send it hurtling in all directions. NASA's Planetary Defense Coordination Office keeps a check on…