Yes human beings are going to be the first species to make themselves extinct by making their environment uninhabitable. There are six major environmental threats faced by human beings. These are as follows:

1. Population explosion

2. Land degradation

3. Shrinking forest cover

4. Climate change

5. AIDS epidemic

6. Biodiversity degeneration

Please go through the following link for more details.

http://www.sciencelog.net/2015/01/escalating-scourge-of-biodiversity.html

Hi Valsa, thanks, ....so the globe is the human petri dish?

Arvind, that is a well written and comprehensive link. So we know what to do to prevent our own and other species annihilation but can't bring ourselves to do it?