3 days ago on the 1st august 1774 , the British minister Joseph Priestly discovered oxygen , how ? He  focused sunlight on mercuric oxide (HgO) inside a glass tube, which liberated a gas he named

Priestly Iredia Adaigbe is Digital Marketing Expert with a focus on Training, Strategy, Promotion & Campaigns using all SuperPowers - SEO, PPC, SMM etc. Priestly Iredia Adaigbe, lives in Lagos, Nigeria.