Hot Dog Eating Champion
Peter Menzel/science Photo Library
Olga Kotelko #2
Alex Rotas
Olga Kotelko #3
Alex Rotas
Silver-haired Female Athlete Running
Alex Rotas
Jack Johnson
Library Of Congress/science Photo Library
Pig Squealing Contest
Thierry Berrod, Mona Lisa Production/science Photo Library
Olga Kotelko #1
Alex Rotas
Senior Athlete With Shot Put
Alex Rotas
Elderly Female Athlete In Competition
Alex Rotas
Senior Athlete With Sports Shoe
Alex Rotas
Tony Buzan
John Cole/science Photo Library
Nikolaus Otto
Science Photo Library
Eugene Godard
Science Photo Library
Eiffel Tower's Searchlights
Science Photo Library
Eiffel Tower's Electric Lamp
Science Photo Library