Union Culture and Tourism minister Gajendra Singh Shekhawat on Saturday said every human being should not act as the "owner" of this planet but act as its "custodian". After inaugurating a climate change gallery titled 'On the Edge' at Science City, Kolkata, Shekhawat said climate change has turned up to be a big issue for the entire world and every citizen as a stakeholder should play his role, not only whistleblower scientists. He said the time has come when one should stop presuming that issues like carbon emission, rise in sea level, extreme weather conditions will not affect him individually in his lifetime but are merely academic issues flagged by scientists and reports in media. "We have to behave with responsibility. Climate change is a big issue for the entire world, when discussion about the greenhouse effect and global warming began 25 years back, many might have thought its effect will be in specific areas. "That notion was belied. Those living in cold regions should no