Global warming true or false?

In 1996, The United Nations presented three Intergovernmental Panel on Climate Change (IPCC) reports, these reports claimed to have the endorsements of 2,500 scientists, creating the "scientific consensus" that President Clinton and Vice President Gore always refer to. In the year 1995, skeptical scientists signed the Leipzig Declaration on Global Climate Change. The declaration states that they "cannot subscribe the so-called "scientific consensus" that envisages climate catastrophes and advocates hasty actions." 1 With two extremely opposite opinions on this …

…the polar ice caps, thus lowering sea levels."7 This may seem like reverse logic, but there is evidence to support this phenomenon. "The global warming that occurred between1900-1940 shows a drop in sea levels, while the subsequent cooler period shows a sea-level rise."7 In conclusion, global warming has yet to prove itself to be true. In my opinion it must be proved with more facts and data to justify the costly steps against it