World's tallest building would have 1,900 floors, house 30m people and cost £23trillion
The Burj Khalifa in Dubai is the tallest man-made structure in the world, but it would be dwarfed by the Tokyo Tower of Babel, which was proposed 30 years ago
'I'm an aeroplane engineer and this powerful move will solve MH370 mystery'
An aviation engineer believes the missing Malaysia Airlines Flight 370 may have been hijacked and landed in the Philippine archipelago rather than crashing in the Indian Ocean