The trail starts in the interstellar medium with hydrogen and oxygen gas and ends with oceans and ice caps on planets, with icy moons orbiting gas giants and icy comets and asteroids that orbit stars. The beginnings and ends of this trail are easy to see, but the middle has remained a mystery.

Around 30% of respondents in a survey attributed the shrinkage of agricultural lands and their subsequent conversion to apple orchards to depleted stream flows – which in turn is linked to glacier melt.

While the numbers are hard to pin down, some researchers say their colleagues have overstated the risks.

Individual behaviour patterns may skew studies. A new approach called ‘STRANGE’ could help, by taking into account the habits, tendencies and life experiences of the creatures under scrutiny.

From a delay in disbursing fellowships and irregular revisions to rising costs, research fellows have pointed out the problems they face.

Male birth control pills aren't available yet, but there are already accusations that men won't want to take them, or can't be relied upon to take them responsibly.

Under the agreement, all countries will have to share benefits – financial and otherwise – from efforts to harness the benefits to be derived from these resources.

Music, memories and emotions are all linked and certain songs can act as a direct line to our past.