Florence Italy

Venice Italy

https://www.google.com/maps/d/u/2/viewer?hl=en&mid=z7fJvHIZSQOU.kyuJHZsa1TN4

Milan, Italy

https://www.google.com/maps/d/u/0/viewer?hl=en&authuser=0&mid=zDlVuCUtWx7Q.kMns-hF0NiOc

Bridges and Locks

3种不同的桥

1. draw bridge

2. locks

3. retractable bridge

Sir Nicholas Winton, who saved 669 kids in 1938

Short version
https://en.wikipedia.org/wiki/Nicholas_Winton#Rescue_work

Long version
http://www.nytimes.com/2015/07/02/world/europe/nicholas-winton-is-dead-at-106-saved-children-from-the-holocaust.html

A website dedicated to him
http://www.nicholaswinton.com/index.html

Questions:
How old was he when he rescued those kids?
Where?
What do you think?

How sliced meat drove human evolution

http://www.sciencemag.org/news/2016/03/how-sliced-meat-drove-human-evolution

How did human change?  Do we used to have bigger/more powerful teeth?