Birds nests attract pests and parasites, like mites and lice. In Mexico, some birds have identified a way to keep the pests at bay, by taking discarded cigarette butts and weaving them into their nests. It remains to be seen, though, whether there are negative impacts on the birds as well.
The Winter Oylmpics are just days away and people are still considering how Russia's social and political situation will influence the games. In Sochi, where the games are being held, the town's mayor asserted that gay people are welcome at the games, provided they follow the country's strict laws, but they won't find any local gay people. That claim was quickly disproven. That story and more in today's Global Scan.