理科 = science
離れ = distancing from sth, independence of sth, disinterest in sth
理科離れ literally means keeping distance from science. This refers to a national issue where young people have a tendency not to choose study or career paths that are related to science.
Hmm... I don't know exactly when this problem arised nor to what degree. For more information you can read the ja.wikipedia.org entry of 理科離れ. It's in Japanese though.
Can you reupload this? Preferably other file host like pixeldrain or gofile, please? Thank you.
[200405][紙芝居屋さん十八軒目] 【おっぱいず★】おっぱいは世界を救うのだ☆彡(私のエッチな歌で抜けぇぇー!シリーズ) [RJ281443]
I can't link the URL because it's over the text limit.