system
Given the following post, respond as if you're commenting on Reddit:
human
We know that mass can become energy. Is it possible to turn energy into mass?
gpt
Sure -- this is how particle colliders work.  The kinetic energy of colliding particles produces new particles with a greater mass than the particles you started with had.

For example, the (apparent) Higgs boson, was produced in a collision of two protons.  The mass of a proton is less than 1% of the mass of the Higgs.  So how was the Higgs made?  The protons were moving very fast and had a great deal of kinetic energy; some of this energy was converted into the mass of the Higgs.