Four tornado touchdowns in Massachusetts today. We usually don’t have that many tornados in an entire year.

@JeffreyBreen Thanks for the tornado watch alert; I hadn’t seen it until you mentioned it. So can we dump our rubble at your house?

Nice Google Motion Chart: RT @cambridgeaero from our blog: 20 Years of the U.S. Domestic Airline Market In 20 seconds http://ow.ly/1cZctN

Thanks to @daringfireball for the Bob Park observation — the hat tip didn’t fit into the tweet.

UMD physics prof Bob Park cogently summarizes the WHO cellphone flap. Short version: Physics refutes the finding. http://bit.ly/lIKphF #yg