An increase of one percentage point in state unemployment rates correlated with a 0.5 percentage point decline in the death rate - or about 5 fewer deaths per 100, 000 people.

REM sleep, the brain state most highly correlated with anxious, angry dreams, occurs late in evolution and early in the lives of those creatures which have REM.

Based on linear unbiased minimum variance estimation theory, a fusion algorithm which fused the state vector of nonlinear systems with dissimilar sensors with arbitrary correlated noises is developed.