A recent study, published in Nature, reports on how anonymized data from three quarter of a million global smart phones was used to detect and map physical inactivity around the world. The study is an outstanding example of the type of scientific analyses that is possible using human beings as sensors.
High-resolution Greenland ice core records reveal two warming events at the end of the last ice age involved warming of more than 10 °C. Furthermore the warming transition beginning 14,700 years ago occurred within only three years.
Based on the latest results from WHO air pollution is now the world’s largest single environmental health risk, linked to 12% of all global deaths. Citizen scientists can contribute to measuring air pollution using a low cost sensor measuring atmospheric particulate matter and share the measurements via open source geospatial web mapping software.
For most of the past 18,000 years warm temperatures in the North Pacific often correspond to cold temperatures in the North Atlantic and vice versa. In this study it is revealed that the occasional synchronicity in the North Pacific and North Atlantic climates correspond to periods of abrupt Northern Hemisphere warming.