Gloucester cathedral’s zero-carbon footprint

Letters: We should be able to generate around 25% of the main cathedral electricity from our new panels, including power for our air source heat system

How much do you know about bees? – quiz

Despite our professed concern for bees, a YouGov poll for Friends of the Earth found that most of us can’t recognise a honey bee. Take the green group’s quiz to see how much you know

• The Great British Bee Count take place from 19 May-30 June

Great Barrier Reef needs $10bn for chance of survival, scientists say

This election is Australia’s last chance to save the reef, which requires $1bn a year for 10 years to reduce water pollution to give it a chance to survive climate change, report warns