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Credits: Image: Gretchen Ertl Next image Danielle Grey-Stewart, a senior majoring in materials science and engineering, is a fierce believer that public service and engineering go hand in hand. She aspires to be a leader in equitable science policy and plans on using her time at Oxford University, where she will be studying next year as a Rhodes Scholar, to study nature, society, and environmental governance. Despite her interest in public service, Grey-Stewart didn’t always see policy as a future career route. A passion for chemistry and understanding the ...

Era? >> yeah, well, it gives me hope, the marches today. thousands are here on the national mall. people are watching in paris, sydney, australia. people around the world are very concerned about this. now, when you look at that gallup poll, and the expression is how many people prefer to have the environment preserved rather than the get energy, we in the engineering community want to remind everybody, there is plenty of renewable energy available. we just have to develop the technologies to capture it. and distribute it. and this would be something that's very doable. we can then get to 80% ...

War i on a horse. nobody who conducts a war nowadays does that on a horse. there were stables, there were liveries, there was whole business supporting horseback riding in the city of new york, washington, d.c., boston, philadelphia. those people aren't in that business anymore. they went to do something else. same thing if you are a coal miner. you are in the heartland. you are what j.d. vance calls a hill billy and you are proud. you don't want to be in the coal business because it's not going to be around much longer. if you work in the mines you know how it's getting automated. we in the e...

Know how it's getting automated. we in the engineering community want you to get involved in new renewable energy. a second thing, a remarkable thing, nuclear power is affected by this, because it gets some benefits, legally, by being clean. so by rolling back these traditional regulations you are even affecting the nuclear strichlt it's remarkable. >> sean spicer was asked a simple yes or no question today. i would like you to grade his answer. it is a little tricky because he didn't say yes or no. the question was, does the president still believe that climate change is a hoax? let's watch t...

Of travel between them below about 500 miles of distance where the hyperloop would be useful. it is a special case. once the distances get long, then the amount of time an aircraft takes to ascent and land, which is mostly what it does on the 500 mile trip, that percentage declines and it is better to use aircraft. >> reporter: we dream about moving comfortably from place to place in a blink of an eye. that is the dream of the hyperloop. >> what is the hyperloop? >> it is very similar to an airplane on high altitudes. you have a low pressure environment. and because of the low pressure, it doe...