14 Discoveries That Still Puzzle Scientists Today
These 14 real scientific mysteries have stumped the world's brightest minds for decades.
Scientific anomalies
18 Unsolved Scientific Anomalies That Defy Physics
Science often advances by asking the hard questions, yet some anomalies persist without satisfying answers.
10 Scientific Projects That Suddenly Went Dark
Here's a look at major scientific efforts that went silent without warning, leaving researchers and the public puzzled.
12 Experiments That Produced Results No One Could Repeat
Some scientific experiments produced striking results, yet subsequent attempts to replicate them consistently failed.