Groundhog day - wikipedia, the free encyclopedia, Groundhog day (canadian french: jour de la marmotte; pennsylvania german: grundsaudaag, murmeltiertag) is a traditional holiday celebrated on february 2.. Spaceweather.com -- news and information about meteor, Sunspot number: 50 what is the sunspot number?. Woolly bear caterpillars winter weather predictors, Learn about the wooly bear caterpillar and how their measurements are used to forecast winter weather. the old farmer's almanac investigates wooly bears as weather.
World population - wikipedia, the free encyclopedia, In demographics and general statistics, the term world population refers to the total number of living humans on earth. the united states census bureau estimates that.