Today's afternoon links, featuring a rap song to the tune of Macklemore's "Thrift Shop" to explain the Krebs cycle, plus a Neil deGrasse Tyson candle.

A recap of last night's episode of "SNL," with Kevin Hart and Macklemore & Ryan Lewis.

See what Macklemore's "Thrift Shop" looks like in MS Paint music video form.

After this week's excellent episode with Christoph Waltz, "SNL" is bringing in Kevin Hart and Macklemore on March 2.

Macklemore's "Thrift Shop" is the number one song in the country...but who the heck is he? An investigation into the independent Seattle rapper.