What do you think that the lifespan is going to be in 50 years??
Need answer its for class

Well, some people might say less because of pollution, new diseases, etc. But, medical technology is getting better and better all the time. Personally, I would say about the same, maybe a little longer. I think more people will live longer than before because we know more about early detection of diseases, have new vaccines on the market, and are improving technology-like the artificial heart. Also, I think we will have better technology/science to deal with environmental problems, not to mention more people are becoming aware of them. Hope that helps.

You can go one of either two ways. Say it'll increase to around 100+ due to better health care. Or say it will decrease back doen to the 50s and 60s due to an increase in obesity causing rises in weight related health issues such as diabetes and cancers. You can also argue it will decrease because of overpopulation putting a strain on natural resources or the complete anniliation of the usefulness of antibiotics.

I don't think it'll matter what age you say as long as you give a good reason and do a bit of research into it.

Sounds like an interesting assignment - post up what you decide!