Scientists in the United States say they have taken an important step on a decades-old quest to harness nuclear fusion to generate nearly inexhaustible energy. For the first time, two nuclear fusion experiments succeeded in producing more energy than was used to trigger the reaction, the journal Nature reports :: Read the full article »»»»
A study published in the journal Science has concluded that climate change is altering oceans and rainfall worldwide. A team of three researchers looked at ocean data over the period 1950 to 2000. The research found salinity levels have changed in all the world’s oceans, wetter areas are experiencing more rain and drier areas have become drier.
Susan Wijffels from the Commonwealth Scientific and Industrial Research Organisation – CSIRO – says she expects the trend to continue.
“The answer of how much more is going to be in the future depends on how much more warning there is going to be,” she said. “So if we stay on a high emissions pathway we might see warming up around three degrees, which will give us maybe a 24 per cent change in our water cycle.”
The authors say this could have implications for global food security. In the paper, Australian scientists from the CSIRO and the Lawrence Livermore National Laboratory, California, reported changing patterns of salinity in the global ocean during the past 50 years, marking a clear fingerprint of climate change. :: Read the full article »»»»