The most experimental hydrogen bomb is the " Tsar Bomb ", with an equivalent of 50 million tons of TNT. Its direct killing radius is about 100 kilometers. That is to say, all animals and plants within a range of about 30,000 square kilometers will be killed directly, with almost no survivors. Of course, its damage range is far more than that. Life within a radius of 100-300 kilometers will be burned or died. People within a radius of 300-1000 kilometers can watch mushroom cloud with their naked eyes may cause cataract , while houses within a radius of 2000 kilometers may collapse and glass shatter, like an earthquake. Of course, it can be regarded as "destruction" in terms of a radius of 100 kilometers near the explosion point.
The total area of the earth's surface is 510 million square kilometers, of which 362.1 million square kilometers of oceans and 147.9 million square kilometers of land.
So to completely blow up the earth's land, about 4930 "tsar bombs" are needed. If you want to blow up all land and oceans, you need 17,000 "tsar bombs". The premise of this calculation is that each hydrogen bomb does not explode at the same time. If thousands of hydrogen bombs detonate at the same time, the degree of damage will increase geometrically.
Currently, there are about 13,000 nuclear warheads in the world, of which about 3,000 hydrogen bombs (strategic nuclear bombs). Most of the others are small-equivalent tactical nuclear bombs. The smallest nuclear bomb has 800 tons of TNT, and the explosion strength is similar to that of conventional missile .
So, the nuclear bombs currently owned by humans cannot destroy all the land on the earth. Moreover, once a war starts, the target of the nuclear attack is mainly cities, especially large cities and industrial bases. No one will drop a limited nuclear bomb to the vast rural areas, grasslands, deserts, and southern continents with vast land and sparsely populated areas. However, once the nuclear war, breaks out, at least 90% of humans will suffer. Therefore, peace is the greatest blessing for mankind.
