A flint tool with a wooden handle and birch tar Where it is from: Öhningen, southern Germany When it was made: 3800 to 3500 B ...

Asthma-Allergy Denmark detected enough birch tree pollen in their pollen traps to officially start the season for the type of tree pollen that most Danes are allergic to. The organization will now ...

The two-lined hooktip moth lays its eggs in even rows on twigs and leaves of birch and alder trees. When the eggs hatch, almost inscrutably small larvae emerge, some as short as half a millimeter. But ...

Between late March and mid-May tree pollen is at its peak and this year it is higher than normal. This is because trees have ...

Time to dig out the nasal spray, eye drops, Vaseline and literally anything else you can find folks, it's going to be a ...