This week in science. New exoplanet: www.iflscience.com/space/strange-newly-discover... Lung tissue: www.iflscience.com/health-and-medicine/stem-cel... Wasps: w This week in science New exoplanet: www iflscience com/space/strange-newly-discover Lung tissue: com/health-and-medicine/stem-cel Wasps: w