<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><b><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>Section of the syllabus – Science and tech</span></span></span></b></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><b><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>Why in News ?</span></span></span></b></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>NASA to launch satellite to track rising sea levels</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><b><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>About the Missile</span></span></span></b></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• It will follow the effects of climate change on the world’s oceans and gather data to improve weather forecasts. </span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• The satellite will continue NASA’s three decades-long work to document rising sea levels.</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• It will give scientists a more precise view of the coastlines than they’ve ever had from space.</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• To measure sea levels, they’ll beam electromagnetic signals down to the world’s oceans and then measure how long it takes for them to bounce back.</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>Advantage : NASA scientists will be able to make higher-resolution observations much closer to shore with the new satellites, which will allow for more precise weather forecasts just before storms make landfall.</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><b><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>Working of the Satellites:</span></span></span></b></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• As a big storm develops over the sea, the water buckles up.</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• A satellite can pick up on that bubble of water rising and use that information for forecasts. The granular measurements could also be used to see how changes in sea level near coastlines might affect ship navigation and commercial fishing.</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><b><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>Impact of climate change</span></span></span></b></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• Tides are creeping further ashore as a result of climate change. </span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• That’s because water expands as it heats up and because the world’s glaciers and ice sheets are melting.</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>• The encroaching water makes flooding and storm surges increasingly dangerous. It’s also drowning entire islands and coastal communities.</span></span></span></span></span></span></p>
<p style=”margin-bottom:13px”><span style=”font-size:11pt”><span style=”line-height:115%”><span style=”font-family:Calibri,sans-serif”><b><span style=”font-size:12.0pt”><span style=”line-height:115%”><span style=”font-family:"Cambria","serif"”>Source –BBC News</span></span></span></b></span></span></span></p>