The document discusses calculating total planetary albedo and global land surface albedo using a figure. It then asks what the change in surface temperature would be if planetary albedo increased from 0.30 to 0.31, keeping greenhouse gas amounts constant. Finally, it compares the rate of energy from burning fossil fuels (20 TW) to the radiative imbalance from greenhouse gases (0.5 W/m2) and asks if this is surprising.