The climate crisis is one of the biggest issues facing humanity. Ice sheets are melting due to Earth's increasing temperature.

#what if  #what happens if  #scifi  #science documentary  #what if scenario  #mysteries  #what if earth  #earth  #hypothetical  #hypothetical scenario  #coastal  #coastal city  #coastal cities  #rising sea levels  #climate crisis  #climate  #crisis  #humanity  #ice sheet  #sea level  #walls  #environment  #environmental science  #sea  #climate crisis 2021  #thermal expansion  #glacier  #greenland  #antarctica  #east antarctic plateau  #coastal land  #underwater cities  #coastline  #maeslantkering  #coastal flooding  #indonesia