Pollution is reducing the amount of natural ultraviolet (UV) sterilizing light outside of the tropics and increased rates of diseases are the expected outcome.

High altitude observatories are commonly constructed with few to no windows, meaning that their staff are typically natural light deprived during their work day.

You should be aiming to illuminate your indoor daytime environment with natural outdoor light, not electrical lighting products.

As humanity progresses its technology on a global level, the observed degradation of natural processes and growth cycles are the alarm systems that nature uses to alert us that some of this progress is biologically toxic.

Naturopathic medicine is the biggest threat to modern corporate healthcare.

As a bio-medical engineer, I have concerns about advising people to electromagnetically shield their homes as it may lead to natural radiation deficiency conditions in addition to Electromagnetic Hypersensitivity (EHS).

It is getting difficult to discern the biological effects of natural radiation from unnatural man-made radiation.

In a natural environment, nature controls the breeding cycles. In the man-made environment, abnormal environmental conditions control the unnatural breeding cycles.

Any species that devours its natural environment will eventually fall victim to the resulting silence and I call the toxicity of silence: Extinction Silence