Unfortunately Derek Low has a colorful history of plagiarism. He often steals other people's photo without credit.

I had a lengthy back-n-forth with numerous authors and photographers about this very post. You'll see that a few of the photos in the beginning of the post now have "Source: _______" beneath them, this was a last ditch effort so that he could keep the post up.

See the HN discussion last time a Derek Low post was submitted: https://news.ycombinator.com/item?id=10258972