I do. I think that in this 21st century we will soon see the consequences of what's called global warming. There was a study just a few weeks ago suggesting that in summertime the north polar ice cap will be completely gone in 50 years. Already people see the strange weather conditions that the old timers say they've never seen before in their lifetimes.
The speaker think that global warming is harmful.
The speaker talks about the consequences of global warming so it is a bad thing. 
( z1 think :ARG0 ( z2 person :ARG0-of ( z3 speak ) ) :ARG1 ( z4 harmful :ARG0 ( z5 warm :ARG1 ( z6 globe ) ) ) )