respiratory viruses but also how the protection is impaired when we are exposed to modest changes in temperurehn: are there implications for how doctors treat colds and flu? >> the type of affect is what we call the innate immune system. the part of our immune system thatmmediately protects us within minutes to hours of being exposed. this tells us th things like masking are still very important, because not only does this prevent us from inhaling the virus, we also think in the cold months, maybe mast maintained the question of warm air and prevent this reduction in temperature. this also tells us as potential preventative therapies in the future that we could leverage some discoveries to full the nose into thinking a virus is resident and up regulate this immune response and may be prevent us from getting infected. john: regardless of the temperature. >> exactly. john: thank you very much. a video game featuring a stray cat is helping rescue animals. gamers are using the platform to raise money for felines without a home. we spoke to a number of people using a virtual stray to help real-life

let'tas ke a live lk.oo temperurate rdieangs in the upper 40's. 50 at half moon bay. nice view from the east bay hills camera. other temperature readings right now, 50 degrees at novato. 38 at saant rosa. mid to upper 40's at concord in livermore. looking toward the bay bridge and these are our forecast headlines. mostly clear and chilly overnight. a light storm arriving late wednesday. y tragain with nnsuy days througthh e weeke.nd the approainchg storm is a level one. inig lht stormed wnesday evening, it will pduroce light rainnd a brief downpou,rs less than aal hf inch o rfain. tinoce, clear seski o nnsuy skies tomorrow,le car morrow nhtig. ouclds thickeden wednesday moinrng. then we get thilis ne ofho swers and someea hvyow dnpours sweepi tnghrough quickly and fortatunely for us it is a fast-movg insystem sito won't produce a lot of rainflal which wi cllomplicatoue r flooding concnser. anywhe frerom a thd irof an inch inak oland, lighter totals,er zo int twonc ihes or sino the rth bay. chlyil conditison. teermpatures ithn e mid topp uer '3's in t ihenland vlealys.