Read more, “…to build a mid-rise building in Harare, Zimbabwe that has no air-conditioning, yet stays cool thanks to a termite-inspired ventilation system. The Eastgate building is modeled on the self-cooling mounds of Macrotermesmichaelseni, termites that maintain the temperature inside their nest to within one degree of 31 °C, day and night, - while the external temperature varies between 3 °C and 42 °C. Eastgate uses only 10 percent of the energy of a conventional building its size, saved 3.5 million in air conditioning costs in the first five years, and has rents that are 20% lower than a newer building next door.”
(Ref. http://biomimicryinstitute.org/case-studies/case-studies/termite-inspired-air-conditioning.html ; Nov.6, 2012)

Lotus

Plate 5A Water droplet on leaf	5B Lotus flower and leaf	5C Tiny points on Lotus leaf surface

(Source:https://www.google.co.in/search?hl=en&biw=1350&bih=602&q=lotus+flower+and+leaf&bav=
on.2,or.r_gc.r_pw.r_qf.&bpcl=37189454&um=1&ie=UTF8&tbm=isch&source=og&sa=N&tab=wi&ei=O
Y6XUPecGoXnrAeDp4CACw#um=1&hl=en&tbm=isch&sa=1&q=Droplet+on+lotus+leaf&oq=Droplet+
on+lotus+leaf&gs_l=img.12...374.11964.0.14358.14.13.1.0.0.0.1670.9234.42j5j2j2j1.12.0...0.0...1c.1.
Ai2KRm6OY9g&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=ee4061bf378a508e&bpcl=37189454&biw=13
50&bih=602 ; Nov.5, 2012)