Fossils suggest spaniel-size dinosaurs walked on hind legs

1. New studies indicate that Christmas trees could pose a threat to human health. Surveys conducted by British researchers suggest that common symptoms like runny nose and cough, associated with this time of year, could be caused by the mould harbored by the tree.

2. The discovery of a new species of plant-eating dinosaurs indicates that they were much more diverse than previously known.

3. In France, archeologists have just found human skeletons belonging to thousands of years ago, which suggest that the prehistoric people were not as peaceful as previously imagined.

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