Budding scientists and explorers aged 18 to 23 are urged to join an expedition to the Arctic by the British Schools Exploring society.

The three-month trip in spring next year will focus on looking at evidence of climate change. Outdoors experience is not crucial as training is provided. Enthusiasm and determination is more important.

For more information, or to apply, visit bses.org.uk or email info@bses.org.uk

  • Electronics store Comet has launched a competition encouraging children to build a model of an eco-friendly gadget for the future.

Schoolchildren aged 11 and 12 have been invited to design a model of their invention using biodegradable materials such as recycled toilet rolls and biodegradable household waste.

The winning pupil will win £20,000 for their school.

Email greengadget@hillandknowlton.com to apply.

  • The Carbon Trust, a government-funded independent company working to help businesses reduce their carbon footprint, is to put £5m into the development of a photovoltaic film which could cover buildings, roofs and windows, to generate cheap electricity from natural light.

Using organic compounds, the film will be created by students attending Cambridge University over the next three years.

  • A study into how life in Britain could be by 2022 if people seriously commit to reducing carbon dioxide emissions, has been produced by the Forum for the Future.

The charity, which works with more than 120 leading companies and organisations and is committed to sustainable development, envisages people flying from London to New York on commercial airships, in journey times of around 20 hours.

  • A rare tiger which was thought to have been extinct in the wild for 20 years has been seen.

A farmer took a snap of a South China tiger in central China mountains last week.

There are currently 68 of these tigers alive in zoos around the world but they were thought to have died out in the wild.