来自MSN29 分钟
1 HORA Musica para Yoga con Sonidos de la Naturaleza y del Mar
Download this music from iTunes: <a href=" ► Join my website <a href=" Musica Relajante Yoga para Meditación Reiki y Clase de ...
Science Daily32 分钟
Scientists harness the power of 'layered' crystals for energy innovation
Scientists are unlocking the secrets of halide perovskites -- a material that's poised to reshape our future by bringing us closer to a new age of energy-efficient optoelectronics. Two physics ...