Beschreibung:
Climate scientists have repeatedly told us that the 1990s had the warmest temperatures ever recorded since records were consistently kept in the mid-1800s. Scientists worldwide support this notion, and there is an abundance of data collected to prove its validity. Some argue that the trend has not been a steady upward climb and that it has had intermittent cooling periods. Although these intervals have occurred every few decades in some locations, the overall tendency has been a steady upward climb, coinciding with melting glaciers, rising sea levels, shifting climatic zones, and changing ecosystems worldwide.