Sarah Zielinski's Articles
- The black garden ant has been spotted defecating inside its own nest. Scientists now characterize these spots as ant toilets.
- Since the arrival of Europeans in Australia, a startling number of mammal species have disappeared. A new study puts much of the blame on cats and foxes introduced by the early settlers.
- Female sharks can store sperm from a male for months before releasing a case containing a fertilized egg. But almost 4 years? That’s a new record that has biologists scratching their heads over how this could have happened.
- Climate change has made winters a little bit warmer. Many bird species are now wintering a lot farther north than they did a few decades ago, a new study finds.
- In 2008, an outbreak of large starfish killed off much of a coral reef. But some patches were spared. New data point to why: Mini crabs had fended off the big attackers.
- In the United States, people often assume that clean water will always be available. But factors ranging from global warming to pollution have begun threatening drinking-water supplies.
- Scientists have tracked harbor seals visiting the turbines of ocean wind farms. The predators may be drawn by fish that make their homes in the artificial reefs created by the manmade structures.
- Paleontology isn’t just for professionals. You don’t even need to be a teen to sometimes make startling — and scientifically important — contributions.
- Minerals can replace any bone, shell or once-living tissue and also fill in the spaces between these hard parts, birthing a fossil.