As experts gather in London for a major conference addressing the often overlooked threat of invasive species to biodiversity, Carrie Madren gets a briefing from those on the frontline in the battle against 'pest plants'
Five committed twentysomethings are making a 2,000-mile trek across the US, picking up litter and educating young people and communities about zero waste
The energy, financial and health costs of lighting up our homes and streets could be saved through better lighting and an end to wasteful illuminations
The main impacts of climate change - changing weather patterns, melting glaciers, sea level rise - are well known. But its ability to reduce oxygen levels in the deep ocean is little reported...