This is the 668th most frequent Japanese word.
に関して
"に関して" means "regarding" or "concerning."
In this sentence, the phrase 'に関して' is used to indicate the topic of her research, which is environmental issues, and translates closely to 'concerning' or 'regarding'.
彼女は環境問題に関して多くの研究をしています。
She conducts extensive research concerning environmental issues.
Here, 'に関して' is utilized to clarify the subject focus of the book's contents, akin to 'regarding' or 'about'.
この本は科学技術に関して書かれたものです。
This book is written regarding science and technology.
In this example, 'に関して' signifies the context or basis of the mentioned discoveries, directly connecting them to the described incident.