Very cool.
Gravy

An example of an alpha decay involves uranium-238:

The process of transforming one element to another is known as transmutation.

Alpha particles do not travel far in air before being absorbed; this makes them very safe for use in smoke detectors, a common household item.
Beta decay

A beta particle is often an electron, but can also be a positron, a positively-charged particle that is the anti-matter equivalent of the electron. If an electron is involved, the number of neutrons in the nucleus decreases by one and the number of protons increases by one. An example of such a process is:

In terms of safety, beta particles are much more penetrating than alpha particles, but much less than gamma particles.
Gamma decay

The third class of radioactive decay is gamma decay, in which the nucleus changes from a higher-level energy state to a lower level. Similar to the energy levels for electrons in the atom, the nucleus has energy levels. The concepts of shells, and more stable nuclei having filled shells, apply to the nucleus as well.

When an electron changes levels, the energy involved is usually a few eV, so a visible or ultraviolet photon is emitted. In the nucleus, energy differences between levels are much larger, typically a few hundred keV, so the photon emitted is a gamma ray.

Gamma rays are very penetrating; they can be most efficiently absorbed by a relatively thick layer of high-density material such as lead.

Such a fun toy

I always love these topics that are assigned OK, I’m being sarcastic but here is something to think about.

Where is the water becoming more scarce? Is it being destroyed or is it more of a matter of management and getting water to where humans want it to be in a quality that is usable to them? Is the real problem to many people in an area and the water not being there to begin with? That is the way it is here. People move into a desert and then complain about not being able to water their lawns