The reading states that global warming is a fact and provides three reasons of support. The professor explains that the global warming can exist but the evidence used in the article cannot be true and scientist do not know if the temperature has been rising or not, and so he refutes each reason mentioned in the reading.
First, the reading claims that the data from sophisticated instruments around the world has proved a warming trend. The professor contends that the temperature from those thermometers show the increase but not all of the thermometers should be trusted. He explains that they took the data from all well-maintained weather stations and averaged them and there was no increase in the temperature after 1979.
Second, the article posits that the alarming rate of breaks in the ice shelves of Antarctica is another reason to prove this trend. The professor opposes this by saying that this information is flawed. He states that it is true that icebergs break but the theory fails to explains the evidence of warming and cooling. He also adds that we cannot assume the break happened because of increase in the temperature. Maybe it happened unnaturally. So, the subject needs to be more studied and more time should be spent to learn about reasons.
Third, the reading avers that unbiased organizations such as reliable newspapers and interantional organizations have considered considered the evidence and accepted the fact. However, the lecturer refutes this point by mentioning that newspapers were published before the report was ready and evaluated thoroughly and it was not examined enough. 
The reading states that global  
warming
 is a fact and provides three reasons of support. The professor  
explains
 that the global  
warming
 can exist  
but
 the evidence  
used
 in the article cannot be true and scientist do not know if the  
temperature
 has been rising or not, and  
so
 he refutes each reason mentioned in the reading. 
First
, the reading claims that the data from sophisticated instruments around the world has proved a  
warming
 trend. The professor contends that the  
temperature
 from those thermometers  
show
 the increase  
but
 not  
all of the
 thermometers should  
be trusted
. He  
explains
 that they took the data from all well-maintained weather stations and averaged them and there was no increase in the  
temperature
 after 1979.
Second, the article posits that the alarming rate of breaks in the ice shelves of Antarctica is another reason to prove this trend. The professor opposes this by saying that this information  
is flawed
. He states that it is true that icebergs break  
but
 the theory fails to  
explains
 the evidence of  
warming
 and cooling. He  
also
  adds
 that we cannot assume the break happened  
because
 of increase in the  
temperature
. Maybe it happened  
unnaturally
.  
So
, the subject needs to be more studied and more time should  
be spent
 to learn about reasons.
Third, the reading avers that unbiased organizations such as reliable newspapers and  
interantional
 organizations have  
considered considered
 the evidence and  
accepted
 the fact.  
However
, the lecturer refutes this point by mentioning that newspapers  
were published
  before
 the report was ready and evaluated  
thoroughly
 and it was not examined  
enough
.