Here's How Europeans Evolved White Skin

In 2015, a revolutionary scientific discovery was presented, at the 84th annual meeting of the American Association of Physical Anthropologists. It offers dramatic evidence of recent evolution in Europe and shows that most modern Europeans don't look much like those of 8000 years ago.

Scientists discovered three genes, namely, SLC24A5, SLC45A2, and HERC2/OCA2, which are responsible for pale skin, blue eyes, and blonde hair. These three genes are closely related to albinism. It is now clear and scientifically settled that white Europeans are descended from albino families.
Albinism is incurable. These genes are passed down from parents to children. They suffer from the same thing. They are UV-sensitive and have a high risk of skin cancer. 

In ancient times, people didn't understand what is albinism. Almost all people might consider it as a curse from God. Therefore, it is safe to conclude that they were excommunicated from society. Eventually, to escape from the devastating Asian heat, these albino families might have migrated to Europe and made it their homeland. And thus, the Indo-European language was born.

SOURCES:
1. AAPA: http://web.artsci.wustl.edu/anthnews/Archives/Summer2017/node/1691.html
2. SCIENCE.ORG: https://www.science.org/content/article/how-europeans-evolved-white-skin
3. SMITHSONIAN: https://www.smithsonianmag.com/smart-news/heres-how-europeans-quickly-evolved-lighter-skin-180954874/
4. BIG THINK: https://bigthink.com/surprising-science/the-genes-for-white-skin-didnt-develop-in-europe-upenn-study-finds/
5. NATIONAL INSTITUTE OF HEALTH: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3325407/