supplies being moved in. the drilling site is not an easy place to work. as well as being 35 degrees, that s in summer, it s also more than 3000 meters above sea level. this is what they re after. this ice sample was from an earlier drilling mission back in 2008. that recovered material from as far back as 800,000 years ago. the new mission plans to beat that. amy king is from the british antarctic survey, who are part of the project. great to have you on the programme. thanks very much for your time. when you make your list of goals for what you make your list of goals for what you were hoping to learn, what is right at the top was my to put some of this in context if we think about how ice is formed on the ice sheet. how ice is formed on the ice sheet- - - how ice is formed on the ice sheet. . , . sheet. year upon year layer upon la er of sheet. year upon year layer upon layer of the sheet. year upon year layer upon layer of the fall sheet. year upon year layer upon layer of th
how much their accident cget the best result possible. we ve seen the movie an asteroid comes careening toward earth, threatening all living beings, including ben affleck. well now nasa is preparing for the possibility of it becoming a reality. they re preparing to test a spaceship that will intentionally crash into an asteroid. nbc news correspondent tom costello has the story. what is this thing? it s an asteroid, sir. it plays just like a scene out of a disaster movie, nasa s latest mission plans to send a small suas craft on a collision course with an asteroid. asteroids have been hitting the earth for billions of years. that s not new. what s exciting and new here is that we re actually taking the first steps to be able to prevent that potentially in the future. and that s where dart comes in. reporter: nasa s double