"What recent research says about fraud, errors, and other dismaying academic problems."
Related: "Science Isn’t Broken: It’s just a hell of a lot harder than we give it credit for". Includes a very clever simulation exercise, "Hack Your Way to Scientific Glory".
Also related: "Many Psychology Findings Not as Strong as Claimed, Study Says" and "A Deep Dive Into the Blockbuster Study That Called Into Doubt a Lot of Psych Research". (I'll bet you the best drink in the house that these problems currently affect psychology and sociology more than economics.)
And still more, on a related but separate problem: "64 more papers retracted for fake reviews, this time from Springer journals".