Which breed of dog joined the disaster rescue squad in Japan?   Answer here

How long does an atom of antihydrogen last?   Answer here

How did jeweller Harry Winston send the Hope diamond to the Smithsonian Institute?   Answer here    

What is an 'Etiquette Angel'?   Answer here

How did Niels Henrik David Bohr, who won the Nobel Prize for Physics in 1922, teach himself English?   Answer here

What is special about platycleis affinis?   Answer here