Science advice is crucial Politics ETH Zurich The scientific community is taking a clear stand on the CO2 Act. Given their expertise, they are not only permitted, but obliged to do so, asserts Reto Knutti. Rivers and streams emit much more CO2 at night than during the day Research EPFL EPFL scientists have found that streams and rivers – or “running waters” – emit on average four times more CO2 at night than during the day. That matters because most estimates of global CO2 emissions are made using measurements taken during the day, thereby introducing a potential bias into the calculation of the global carbon cycle. Previous 24 25 26 27 28 29 30 31 Page 31 of 31