Got an urgent call that needs to overcome virtually infinite gravity? This Question of the Week explores if mobile calls from black holes are possible. Plus, we ask if ploughing up the snow can worsen global warming. Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Does ploughing snow cause global warming?

Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...