In the early evening on Ri Ja, as the sun went down and the heat of the day began radiating away through the helium-rich atmosphere, temperatures dropped, and all the things that gas taken advantage of the thermal updrafts of the morning and afternoon, also began dropping. The seeds that had risen earlier now came down out of the sky, in some seasons lining the ground with their white down so heavy that it looked as if snow had fallen. The dew fell so heavily in the dropping temperatures that it felt like a light rain, flattening out the fluffy tufts of the airborne seeds against the ground, watering them in and starting their germination cycle.