at 07:00 PM ET, 04/20/2012

— How 3-D printing will revolutionize manufacturing.

— America’s dumbest tax loophole involves renting cattle.

— India flips on the world’s largest solar power plant.

— If you spent all your time collecting dinosaur fossils, this is what your living room would look like.

— “When Rob Portman says he’ll leave his office at 5 PM, he gets home at 4:58 PM.”

— The new Senate farm bill is out, and it’s not getting rave reviews.

— Researchers will go through every 2008 article published in three psychology journals, redo the experiments, and see if they hold up.

— Is it possible to copyright magic tricks? Teller of Penn & Teller sure hopes so.

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