@CNN: Building walls on the seafloor could prevent glaciers from melting and sea levels rising due to global warming, scientists say https://t.co/FDjrIojwqT https://t.co/WuvqNUr1Qr

@CNN: Building walls on the seafloor could prevent glaciers from melting and sea levels rising due to global warming, scientists say https://t.co/FDjrIojwqT https://t.co/WuvqNUr1Qr