Nato has announced it is stepping up its presence around Russian borders to reassure eastern European member states, in an effort also aimed at increasing pressure on Moscow before international talks on the Ukrainian crisis on Thursday in Geneva.
Nato chief Anders Fogh Rasmussen said:
We will have more planes in the air, more ships on the water, and more readiness on the land.
"[N]ot only is helium-4 lighter than two protons and two neutrons individually, it’s lighter than four individual protons! It isn’t by all that much — just 0.7% — but with enough reactions, it adds up quickly. In our Sun, for example, somewhere around a whopping 4 × 10^38 protons fuse into helium-4 every second in our Sun; that’s how many it takes to account for the Sun’s energy output.
But it’s not like you can just turn four protons into helium-4; in point of fact, you never get more than two particles colliding at the same time. So how, then, do you build up to helium-4? It might not proceed how you expect!”