As concern over climate change and the loss of biodiversity soar, we offer some practical tips on simple actions you can take now, from examining your energy use, to what you can do in the garden, and from altering the way you travel to the food and drink you consume. Look out for part II in the Cambridge Independent (June 26-July 2 issue), with advice for shoppers, businesses and more. We all know it’s a good idea to switch your energy provider regularly to save money. When you do, pick a provider and tariff that offers renewable energy. It’s possible now to pick 100 per cent renewable electricity tariffs. Bear in mind we’re connected to a grid, which also includes electricity generated from non-renewable sources, so it’s impossible to say your electricity usage is carbon-free – but you can help improve the UK performance. About a third of heat lost in the home escapes through the walls. Cavity wall insulation typically costs an average of £330 for a flat, and saves £70 annually, while it costs £725 for a detached house and saves £255 a year, meaning you can get your money back in a few years. In doing so, a flat owner will save 290kg of carbon dioxide a year – and a deta...