Liberia

 I wrote a brief history of Liberia 

Newton Abbot

 I wrote a history of the town of Newton Abbot in Devon 

Roget's Thesaurus

 Peter Mark Roget was born on 18 January 1779. He is famous for Roget's Thesaurus. Happy, cheerful, contented, joyful, joyous jubilant, blessed, merry, blissful, birthday, natal day, date-of-birth, name-day Mr. Roget.

Bodmin

 I wrote a brief history of the Cornish town of Bodmin 

Ivan the Terrible

 Ivan the Terrible was crowned Tsar on 16 January 1547. He was the first ruler of Russia to have the title of Tsar.

Hat Day

 15 January is National Hat Day  

Sun Tans

 For centuries it was fashionable for women to have pale skin. If you had a tan it meant you had to work outdoors. Having pale skin was a status symbol because it meant you could stay indoors. But from the 1920s tans became popular. A man named Eugene Schueller invented sunscreen in 1936.