• Bringing Rain Gardens to Urban Areas

    Water management is a major issue in large urban areas, where after heavy rainfall, rooftops, streets and pavements act as funnels. This sends huge volumes of water very quickly into drainage systems, putting pressure on rivers and increasing the risk of flooding. In contrast, undeveloped land absorbs and utilises water, thus slowing its progress to rivers. It is this natural bioretention that our towns and cities must learn to mimic. Rain gardens do just that. In its most basic form a rain garden is a planted depression in the ground, providing porous and absorbent materials into which water can soak, with plants that can withstand occasional temporary flooding. >> Read the Full Article
  • Extent of Range is a Key Factor in Extinction Risk for Ocean Animals

    What makes some ocean animals more prone to extinction than others? A new study of marine fossils provides a clue. An analysis of roughly 500 million years of fossil data for marine invertebrates reveals that ocean animals with small geographic ranges have been consistently hard hit -- even when populations are large, the authors report. The oceans represent more than 70% of Earth's surface. But because monitoring data are harder to collect at sea than on land, we know surprisingly little about the conservation status of most marine animals. By using the fossil record to study how ocean extinctions occurred in the past, we may be better able to predict species' vulnerability in the future. >> Read the Full Article