Nairobi, Feb. 16 -- It is 11pm on Valentine's Day. As Kenyans share love and chemistry with their loved ones in different ways, one teacher is teaching real chemistry in a laboratory.

The lab coat-clad Rose Tata Wafula is teaching as cameras roll. The lesson is being live-streamed on YouTube and Facebook. A timer is running.

Some of her students look like they are questioning their life choices as they appear to be fighting sleep. Spirit, willing; flesh, weak.

She is there talking about chemical reactions and bonds and whatnot. You might call Tata a killjoy or even a certain word that ends with "block" if you weren't versed with what she is up to on this day when love is diffusing in the air and when some other bonds would be ideal.