What is climate change?
Climate change refers to a large-scale, long-term shift in the planet's weather patterns and average temperatures.Read more
Tree pollen occurs first, typically from late March to mid-May. Grass (which actually has two peaks) lasts from mid-May until July, and weed pollen covers the end of June to September.Read more
Usually when we talk about the first day of summer we are referring to the astronomical summer which is defined by the Earth's axis and orbit around the sun.Read more