. >> scientists at uc berkeley have hacked process of photosynthesis. in doing so they found a new way to make plans soak up the sun more quickly which could lead to better crop yields. scientists boosted the levels of three proteins involved in photosynthesis increasing the productivity of genetically modified tone co-plants by as much as 20% and raise the efficiency of plants was once thought impossible. the research could revolutionize food production. >> amazing how they figure that stuff out. >>> and speaking of food. >> that's right. >> it's time for our abc 7 food drive. we're partnering with bay-area food banks to help feed more than 840,000 people in need of food each month around here. >> weather anchor spencer christian is live in concord to tell us more. hey, spencer. >> hey, kristen and dan. i'm here in concord, and, you know, you've heard me talk about the scroll tiers here which are tremendous. not only are donations important but the poll tier effort is as well. patty deutch is one of the many volunteers. good to see you. >> thank you. >

the spines are actually leaves where photosynthesis takes

d w when u get o much alg it smotothers the oysters, it keeps out the sunlight, you can't do photosynthesis, and if we can support the ecological value of the oyster as much as the consumer value, we're doing a great service to the bay. [crickets chirping] >> it's the first day of oyster season in maryland. and the tongers are out in full force in broad creek, a tributary of the eastern shore's largest river, the mighty choptank. >> hand tonging is a traditional method of harvest. it takes somebody who is tough and has a great love of the water to do it. they enjoy being who they are, what they are, where they are, and doing what they're e doing. it's a prettyty good way to sped yourur life. >> you get up early, you get to see things that people that work in offices don't ever see. it feels self f rewarded, you know, it's good. it''s good. >> you're your own boss and you can go when you want. [chuckles] quit when you want, start when you want. if i had to start all over again i'd probably be the exact same thing. >> well, kurt's rigight that hes his own boss, within the limitations imposed

they make photosynthesis possible from which all of her food and all of our air comes from.they are critical to every plant that justin rose. so justin has totally revise the way his family farms. along with many farms lake and across the great plains, they have retired their plows. they now farm. justin has not plowed into the 15 years. is introduced enormous and ever-increasing diversity into his thousands of acres so he keeps added a new rotation of crops and he also adds in cover crop that are not, they're not commercial crops. he never harvested by the plans mixes of cop crops of those help protect and wienerschnitzel. he is the first of thing from a small organic local farmer, but his soils are rebounding in a really remarkable way. the levels of carbon and organic matter into cells and the level of life in his soils are beginning to approach the native prairie. that's a really important achievement given how critical farmers in the heartland for for all of our future. i want to read just a little bit. i spent many, many hours going around justin's fields within. you w

these plants could be carrying on photosynthesis to combat the man made industrial strength out there. we have 50 years of oil left. 50 years left. i'm 53 years old. my lifetime plus we'll no longer have oil for our children. it has more energy than any other plant. we could be double-harvesting down south seeds, we could be running fuel, we could be running marijuana fuel in our diesel motors. >> got your point, scott. want to let john hudak talk about some other uses for the marijuana plant. >> scott brings up a good point. there's a hemp movement in this country that really wants to get back to what are the roots of the united states, which is using hemp for a diverse number of purposes. there's hemp oil, as scott mentioned. it can be used for food, it can be used for linen. paper, a variety of things. in my new book "marijuana: a short history" i take a look back. in the colony of virginia hemp was required by the british crown and many early american farmers were producing hemp in significant amounts, including george washington and thomas jefferson because it is such a diverse p

these plants could be turning out photosynthesis to purify the polluted air that we have with all of man-made industrial strength out there.there. we have 50 years, and 5 i am 53-years-old, so my lifetime [inaudible] we've got to put a plant here. it has more energy than any other plant we could bee harvesting, we could be running fuel, we could be running marijuana fuel in our diesel motors -- first week off your plate and we want to let sean talk about some of the other uses. >> guest: scott brings up a good point, and that is that there is a hemp movement in the country that wants to get back to what are the roots of the united states, which is using hemp for a diverse number of purposes. hemp oil can be used for food and women and paper, a variety of things and in my new book, "marijuana a short history," i profiled the users over time and it's interesting when you look back, the virginia colony for instance where the projection of hemp was required in many early american farmers were producing hemp and significant amounts including george washington and thomas jefferson, because