<prompt> Translate the following text to EnglishTumeomba Chuo Kikuu cha Sayansi cha Marekani kutupa habari za hivi karibuni kuhusu kile kinachojulikana na kile kisichojulikana kuhusu mabadiliko ya hali ya hewa.  <response>: The working group asked the highly respected National Academy of Sciences to provide us the most up-to-date information about what is known and about what is not known on the science of climate change. 