5 of the best urban days out in England

Experience a burst of activity or just some scenic calm with these city-based trips, featuring a kayaking tour of Tyne bridges to yoga on a paddleboard.

Water worlds: top 10 marine adventure holidays worldwide

Ahead of the BBC’s new David Attenborough series Planet Blue II, we pick 10 trips that explore the oceans, from diving the Pacific’s ‘underwater Serengeti’ to reef conservation in Belize and kayaking in Komodo

Nasa finds evidence of a vast ancient ocean on Mars

A huge primitive ocean covered one-fifth of the red planet’s surface, making it warm, wet and ideal for alien life to gain a foothold, scientists say