| The Paris Agreement was debated and adopted by consensus during the 21st Conference of the Parties (COP21) of the United Nations Framework C...
| The Paris Agreement was debated and adopted by consensus during the 21st Conference of the Parties (COP21) of the United Nations Framework C...
| The people at Philips know their way with lighting, and now they're offering us a glimpse inside the light-cooking Philips kitchen. Welcome...
| A battery of solar cells can recharge a NiCd battery with better than 80%, efficiency, provided the solar battery voltage exceeds the fu...