A robot automatically identifies weeds in a field and combats them with a short laser pulse. Sustainable agriculture, which avoids the use of herbicides as far as possible, could benefit from this smart idea.
Many large fish species, including many of the sharks and rays of Europe, are threatened with extinction. Confirming the findings of previous studies, scientists highlight regional differences in fish stock status in Europe and point to overfishing in the Mediterranean.
An international team of scientists has found evidence suggesting the dehydration of minerals deep below the ocean floor influenced the severity of the Sumatra earthquake, which took place on Dec. 26, 2004.