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Calorie restriction
Careful restriction of the number of calories eaten, without causing malnutrition, extends the lifespan of numerous organisms – from worms to mice – but whether it works in monkeys is controversial. Building on results from a long-running primate experiment, a team at the University of Wisconsin show a reduction in mortality, in response to caloric restriction. So there seem to be some benefits, but Tracey Logan asks if this can be applied to humans? And would we want to live longer on a tightly controlled diet?

Dating the Moon
New work by planetary scientists from France, Germany and the USA, has given the most accurate date yet for the birth of the moon. The Moon is believed to have formed out of debris from a massive collision with another Mars-sized planet. The date of this event has always been controversial as radioactive decay readings have produced wildly different results. But this clock uses a different approach, and rules out an early-forming moon. The later the moon formed, the less time for life to evolve.

Mars Yard
In 2016 Europe launches a mission to mars. ESA’s robotic rover will land on Mars in 2019, and in the meantime, needs to practice. To test it, scientists have recreated the surface of Mars, with 300 tonnes of sand. Reporter Sue Nelson went to Stevenage to play in the sandpit, for science.

IPCC
This week sees the most recent report from The Intergovernmental Panel on Climate Change, the IPCC. And the message is the same: the climate is changing as we continue to add greenhouse gases to the atmosphere.
Should we concentrate on adapting to climate change, rather than stopping it? Professor of Coastal Engineering at Southampton University, Robert Nicholls and Dr Rachel Warren of the UEA’s Tyndall Centre for Climate Change Research discuss adaptation plans.

Producer: Fiona Roberts