1 Lopping leap years
2 Is the world coming to an end soon?
3 Cozy Zurich
4 Daniel Bernoulli and his difficult family
5 The mathematicians' million dollar baby
6 A puzzle by any other name
7 Twins, cousins, and sexy primes
8 Hilbert's elusive problem number 16
9 The tile layer's efficiency problem
10 The Catalanian rabbi's problem
11 Even infinite series end sometimes
12 Proving the proof
13 Has Poincare's conjecture finally been solved?
14 Late tribute to a tragic hero
15 The unpaid professor
16 Genius from a different planet
17 The resurrection of geometry
18 God's gift to science?
19 Vice-president of imagineering
20 The demoted pensioner
21 A grand master becomes permanent visiting professor
22 Knots and "unknots"
23 Knots and tangles with real ropes
24 Small mistakes may have large consequences
25 Ignorant gamblers
26 Tetris is hard
27 Groups, monster groups, and baby monsters
28 Fermat's incorrect conjecture
29 The crash of catastrophe theory
30 Deceptive simplicity
31 The beauty of dissymmetry
32 Random and not so random
33 How can one be sure it's prime?
34 A mathematician judges the judges (law)
35 Elections aren't decided by the voters alone (political science)
36 A dollar isn't always worth a dollar (insurance)
37 Compressing the divine comedy (linguistics)
38 Nature's fundamental formula (botany)
39 Stacking words like oranges and tomatoes (computer science)
40 The fractal dimension of Israel's security barrier (geography)
41 Calculated in cold ice (physics)
42 Built on sand (physics)
43 Buzzing around corners (biology)
44 Inexperienced traders make the market efficient (economics)
45 The waggle dance of Internet servers (computer science, biology)
46 Turbulent liquids and stock markets (finance, economics)
47 Encrypting messages with candles and hot plates (cryptography)
48 Fighting for survival (evolutionary theory, finance)
49 Insults stink (neurosciences, economics)
50 Bible codes : the not so final report (theology)