john: she did get a degree in india, and a phd from the university of colorado boulder. was one of 20 applicants accepted into nasa's astronaut program out of a pool of nearly 4000. she was assigned to the shuttle columbia as a mission specialist and crime robotic arm operator. on her first mission, she used the arm to deploy a research satellite intended to study the sun, but it malfunctioned. her second vision, she oversaw the impact of low gravity. on the return to earth on february 1, 2003, just minutes before it was to land in florida, the columbia disintegrated, killing the entire crew. nasa suspended spaceflights for two years while it investigated the disaster, which was blamed on damage the shuttle suffered during liftoff. in india, shock and horror. many said tearful play oils -- tearful prayers in her hometown. >> and liftoff. john: in 2020, nasa launched a commercial spacecraft named after the modest but determined woman who pursued her passion, inspired others and contributed to the cutting edge of science. ♪ and that is "pbs news weekend" for this sunday. i

well, next break off is the chairman of environmental studies at the university of colorado boulder. he says, the wells will be watching just how successful the span will be. this is going to be a test case for many other countries to potentially fall. wow, this material impact is quite minimal, really just 2 percent of global c o. 2 emissions come from ation and just cancelling 3 flight routes as minimal and mature ways. but in symbolic ways. this has a lot of purchase that the ways in which this then generates conversations, much like the one that we're having right now can open up further possibilities for mission cost, emissions cuts, elsewhere. it's about a 3rd of c, o, 2 emissions. when you travel from place to place by train versus buy, uh, airprint. and so that's one way to think about as a train travel is a much smaller fraction of our global c o. 2 emissions that everything does count. and the ways in which we get from place to place does matter. and transportation overall contributes somewhere in the range of a quarter to 30 percent of global emissions. what i think is rea

. >> and then i have side effects of chemotherapy researchers at the university of colorado boulder reveal cancer patients who used cannabis products noticed a significant decrease in their pain after 2 weeks of consistently using cannabis. researchers say the patients were getting better sleep and we're able to think more clearly, doctors say intense pain from chemo can make it harder to focus on anything other than the aches. >> what we saw some acute decreases in the experience of pain increased mood. people reported better cognitive function. they also reported increases in their subjective subjective performance is if i ask you, do you feel clear-headed? the national institutes of health estimates nearly 2 million new cancer cases. >> will be diagnosed in the u.s. this year alone. the results from the study could provide another way for cancer patients to address their pain instead of using opioids. a diabetes drug that's become a huge hit for weight loss could become a new weapon against alzheimer's as well. scientists at johns hopkins university and wake forest university believed d

people battling cancer and the negative side effects of chemotherapy researchers at the university of colorado, boulderer patients who use cannabis products noticed a significant decrease in their pain after 2 weeks of consistently using cannabis. researchers say the patients were getting better sleep and we're able to think more clearly, doceors say intense pain from chemo can make it hard to focus on anything other. then the pain. >> what we saw some acute decreases in the experience of pain increased mood. people reported better cognitive function. they also reported increases in their subjective cognitive function of subjective performance is if i ask you, do you feel clear-headed? >> well, the national institutes of health estimates nearly 2 million new cancer cases will be diagnosed in this year alone in the u.s.. the results from this study could provide another way for cancer patients to address their pain instead of using opioids, which is what's currently prescribed. 8.41. is the time. >> coming up on the kron 4 morning news flights to raise fights, i should say, to raise the legal age to buy

in max boy, coffee's professor and chair of environmental studies at the university of colorado in bold is joining us from a boulder. so thank you very much. indeed for being with us. the airlines, as one might expect, they're probably going to have a significant amount of leverage with a government and financial leverage as well. how likely is this gonna work? well, thanks for covering that story, rob. i think that this is going to be a test case for many other countries to potentially fall. wow, this material impact is quite minimal. really just 2 percent of global c o. 2 emissions come from ation. i am just canceling 3 flight routes as minimal and material ways, but in symbolic ways. this has a lot of purchase that the ways in which this then generates conversations, much like the one that we're having right now can open up further possibilities for mission cut, emissions cuts, elsewhere. one can see this working to, to some degree if there is already a real infrastructure in place that people can use to get to places that they would normally use the plane to, to get to. but obviously in places like america, tha