Precognition, or maybe better presentiment, may have been proven.
There is a study that presents proof for intuitively feeling future events: Study Proves that the Heart Responds to Future Events.
It presents an overview of the study but unfortunately also has a bit of an advertisement feel. Also the HeartMath website itself makes me think more of new age than of a serious scientific institution… I don’t really know what to think about this, but it’s interesting anyway.
The original published articles:
R McCRATY, M ATKINSON, RT BRADLEY. 2004. Electrophysiological Evidence of Intuition: Part 1. The Surprising Role of the Heart. The Journal of Alternative and Complementary Medicine. 10(1), pp. 133–143. (Intuition_Part1.pdf)
R McCRATY, M ATKINSON, RT BRADLEY. 2004. Electrophysiological Evidence of Intuition: Part 2. A System-Wide Process? The Journal of Alternative and Complementary Medicine. 10(2), pp. 325–336. (Intuition_Part2.pdf)
Update: Maurits’s analysis makes it clear that the study doesn’t prove anything!