now, when this does happen, and the one with a low kinetic energy happens to be h2o, and it's near a neighbor that just did the same thing, that made some other oxygen or nitro molecule go faster and give up its energy and gets over to here, these h2os will coalesce and then become-- more and more happen. what happens here, this becomes a little droplet. it's not part of the air anymore. there's your condensation. what is left behind? the air is warmer. can you see that? so in the last bounce of h2o with the air molecule, the last bounce that gives up most of its energy to this one, and then they coalesce, that last-bounce energy warms up the air. this happens even when it's snowing, especially when it snow. one time, i'm with my friends up at the lake tahoe, and i'm up at the top of the mountain. and i said--and all of a sudden, i feel it really, really getting warm. and i'm just kidding around and going like this, "humba, humba, humba, snow, snow, snow." and someone says, "hewitt, you're taking yourself too seriously." and all of a sudden-- "hewitt, son of a gun, i underestimated yo

and the reason for the six sidedness of the snowflakes has to do with the way the h2o molecules pack together in their least energy configuration. and as they're all packed together and theyorm hexagons you see that ithe textbook? and this is on page 263. and they form these hexagon structures with an open space in the middle. so you know what that means? a snowflake takes up more room in the snowflake form than if you melt it and turn it back to wate you turn it back to water, the molecules will caved in and occupy that empty spot. it's like a brick building. a brick building occupies more space when it's in its constructed configuration than if you shake it so ha, you shake all the bricks and they cave in. the pile of bricks is less voluminous than the brick building was before it caved. same thing with ice, gang. so water forms an open structure ints crystalline for and that's kind of nice. it makes ice less dense than water, and the ice will float. so you can go ice skating, gang. some people are kinda good at facts and figures. does anyone here know when it was that christoph co

in most metamorphic rocks, that means mainly the loss of h2o and co2. fluids are released not only by metamorphic rocks at high temperatures, but from magmas intruding the metamorphic rocks as well. during mountain-building, the crust in many places is saturated with migrating fluids. these accelerate some chemical reactions and may stop others. so, the spectacular diversity of metamorphic rocks is created by the numerous protoliths, the presence of fluid, and the wide range of temperature and pressures possible within the earth. when rocks are exposed to the heat and pressure of metamorphism, they undergo changes both in texture and mineral content. the specific changes that take place depend on a variety of factors, including the composition of the original rock-- called the protolith, how much heat and pressure are applied, the length of time of metamorphism, and whether or not water is present. most metamorphic rocks form in one of two geologic settings. the first is where cold rock is intruded by a hot magma. this is called contact metamorphism, and

hence, the need to bring in water tenders to fill portable pools from which the hoses could draw that h2o, and could you see the yellow pools in the background as you look down the roadway here and to the right. you can still see a lot of the smoke. again, this fire is definitely contained, and they might even say it's controlled. it's not going spread anymore. right now what they're doing is they're trooit trying to lift up debris and trying to air rate it and get this thing officially out. again, no one was hurt. just a few structures destroyed here at a massive fire in coyote. reporting live here in coyote, bob riddell, nbc bay area news. >> okay, bob. thank you very much. right now we're going to update you on a sad and heartbreaking story. we have new details about the death of a baby in san francisco. bay area investigators right now calling this one suspicious. nbc bay area's christy smith live on the scene right now with what police are telling her. christy, good morning. >> good morning to you. a really sad story out of san francisco this morning. a little boy brought to the hosp

the spram a partnership between the health department, first five and the water district. >> h2o to go. >> i always carry water in my car. >> 5:21. coming up on "today in the bay," ben and jerry's. coming out with a new ice cream flavor based on the sequel. >>> i think safe to say it's a banner morning for you so far. showed cute fuzzy bears here -- pandas, so no pandas now but we've got something else. jimmy fallon pulling out his favorite puppies. the puppies to predict who will win this year's world series. have a look. >> let's release the puppies. the red sox. we have a winner there. the boston red sox. >> the series is far from over. the puppies appear on track. >> they made him look good. >> you saw last night's game during game one the red sox scored early and held on, beat the cardinals 8-1 to take a 1-0 lead in the series. game two is tonight in boston. the puppies are adorable. actor will ferrell gears up we're seeing ron's face on a lot of products. >> it's a welcome face. we love seeing him. how about this, a pint of ben & jerry's new ice cream called, of course, scotchy s

in fact, you can make water h2o where the h is a double weight hydrogen and guess what we call the water? heavy water and you lift it up, you can feel it. it's heavier, okay? heavier water. this is called an isotope of hydrogen, called deuterium, duet, duo, okay? deuterium. you can also have another isotope of hydrogen which has an extra neutron and these are relatively rare, especially this one, it's called, tritium. trio, three people, trio, tritium, and so this would be isotope tritium of hydrogen, but see the one down there. that tells you that this nucleus has a positive charge of one and is capable of holding one electron in orbit to be stable. okay? now you know what happens if you add another proton? if you add another proton, now these two protons will pull this one tighter, because there's more force, so what it does, pull that into a smaller orbit and furthermore hold an extra electron. this atom is physically smaller than the hydrogen. this atom with two protons is called... check your neighbor. atomic number two. - helium. - helium. that's helium, gang. now, gang, that's hel

the building block for collagen. >> i will consume vitamin c, daily! [ laughter ] >> last but not least, we can't talk about hydrating your skin without talking about our good friend, h2ome of those toxins that we wanna get rid of. you see that i have loaded this up with cucumber, it contains sillica, and silica, in the system of help you retain water, so you hydrate within. >> we have given you stuff for the inside. now let's talk about what you can do on the outside, the surface of the skin. this is a new product, this is boots #7 lift and luminate, day and night serum, which works immediately to improve the appearance of skin. >> i see there are two tubes, do they do two separate things? >> yes, they tackle different key signs of aging in just 4 weeks. during the day you can put on the serum, and that will have the skin brightening complex, diminishing the age spots and the firming complex helps provide smoother, firmer skin. and in the evening you have ingredients to exfoliate and revitalize an even skin tone. this is less than a night of drinks with the girls. [ laughter ] >> where do we find that? >> the day and night serums are sold together at target. >> and no