] 13 things that do not make sense

Great article pointing out some of the very open gaps in our understanding of the who and what of existence.

1. The Placebo Effect
2. The Horizon Problem
3. Ultra-Energetic Cosmic Rays
4. Belfast Homeopathy Results
5. Dark Matter
6. Viking's Methane
7. Tetraneutrons
8. The Pioneer Anomaly
9. Dark Energy
10. The Kuiper Cliff
11. The Wow Signal
12. Not-so-constant Constants
13. Cold Fusion

Typical New Scientist approachability.

New Scientist 13 things that do not make sense - Features