Blossoming among spoil heaps : how 1,000 years of lead mining gave birth to banks of pansies and (…)

Calaminarian grassland is a rare habitat where plants thrive in soils contaminated by heavy metals. But should these toxic meadows be protected or allowed to fade away? At first, the small purple flowers are hard to spot in the weak May sunshine. Slowly the drifts of delicate mountain pansies, (…)