Featured
Business
Design
Education
How-to & DIY
Programming
Research
Science
Technology

Featured decks

64827b31aef81498662e8af4bd6d5157?s=48 Dec 5, 2012
1020
330k
462dad0dd24c568a32dcdb0ae895ae1b?s=48 Oct 27, 2012
314
18k
24fc194843a71f10949be18d5a692682?s=48 Nov 3, 2012
82
11k
027d1ebf66cc039a0bd3b55eeadbe75d?s=48 Oct 26, 2012
447
35k
282d599b414022eba5096510f675b6e2?s=48 Sep 12, 2012
231
16k
282d599b414022eba5096510f675b6e2?s=48 Oct 7, 2012
168
13k
C157b16234f1e75e8eac3698c1d4414a?s=48 Oct 6, 2012
274
31k
C9b18d9dff88a9dd2393364c2b3b21bd?s=48 Sep 10, 2012
183
14k
761be20b5ebd271008bcee1244fc5b52?s=48 Aug 29, 2012
70
6.9k
6804f1775cb4babfcc3851298566fbce?s=48 Jul 6, 2012
256
24k
E837d2996f52008ace055a08fbfff992?s=48 Jun 8, 2012
122
20k
5ce91fa49a613cbc3e20d5f96856473f?s=48 Jun 8, 2012
55
9.2k
1b75d89772b7eea1f6c89fbf362607d9?s=48 Jun 8, 2012
123
21k
5f2da528927a2ec9ba4fec2069cbc958?s=48 Jun 9, 2012
293
38k
Ba530e786553390f3fb271848485681c?s=48 Jun 9, 2012
159
22k
7559f6cff1f5efc2d210965febd4d71c?s=48 Apr 27, 2014
340
25k
11c84dff30266b907714802088852677?s=48 Jun 8, 2012
80
7.8k
79acae287842acf29084005533a7fb3b?s=48 Jun 5, 2012
103
9k