National Insect Week, Venus' electric field, Green mining, Wimbledon grass science

This week is National Insect Week. Almost all animals on Earth are insects, and entomologist Adam Hart told us why we're celebrating and studying them in such detail - particularly diamondback moths, which have recently arrived the UK in large numbers. On the first official (and rather rainy) day of summer, we went down to Butterfly Paradise at London Zoo for the event launch. Entomologist Adam Hart tells us what the Week is all about.New research out this week suggests that a so called "electric wind" has stripped all the water away from the surface of Venus. Space scientist Glyn Collinson at NASA Goddard Space Flight Centre has led this electrical field study.Wales has 1300 rivers with illegal levels of heavy metals. Toxic metals like lead, zinc and copper are a legacy left over from when the area was heavily mined. Natural Resources Wales and Innovate UK set a competition to look for technology that would clean up these rivers. One of the winners was Steve Skill from Swansea University, who has come up with some biotechnology that uses algae to suck the poison out of the rivers.The Championships at Wimbledon start next week, and whatever the weather, the grass has to be perfect. Adam Rutherford headed to London's SW19 to find out how the ground staff are using scientific evidence to cultivate the courts.Producers: Marnie Chesterton & Jen Whyntie.

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