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This Tiny Frog Emits a Powerful Ultrasonic Scream No Human Can Hear

The Brazilian Atlantic Rainforest is filled with the ear-piercing ‘screams’ of a tiny amphibian in distress, but until now, we humans have been oblivious to their cries.

For the first time, researchers have recorded South American frogs crying out at a frequency that totally bypasses the human ear – but which would be quite unpleasant to animals with the right kind of receivers.

The leaf litter frog (Haddadus binotatus) is the most abundant species of frog in the forest community. Though abundant, they’re tiny – the largest of the species are females, and even they that barely reach 64 millimeters (2.5 inches) in length.

FSD Stories

Explore the fun and excitement that comes with Tesla FSD We have curated Tesla FSD test drives, stories, and shorts into a map layout so you can explore how people are trying the Tesla FSD and the reactions they are getting. For best results expand the map to full screen and select from these options.

FSD drives: 66 stories: 14 shorts: 6

If you want to add your FSD adventure video, send us an email to: [email protected] Include the youtube video url, and any comments you want to share smile

Nothing is everything: How hidden emptiness can define the usefulness of filtration materials

Voids, or empty spaces, exist within matter at all scales, from the astronomical to the microscopic. In a new study, researchers used high-powered microscopy and mathematical theory to unveil nanoscale voids in three dimensions. This advancement is poised to improve the performance of many materials used in the home and in the chemical, energy and medical industries—particularly in the area of filtration.

Magnification of common filters used in the home shows that, while they look like a solid piece of material with uniform holes, they are actually composed of millions of randomly oriented tiny voids that allow small particles to pass through. In some industrial applications, like water and solvent filtration, paper-thin membranes make up the barriers that separate fluids and particles.

“The materials science community has been aware of these randomly oriented nanoscale voids within filter membranes for a while,” said Falon Kalutantirige, a University of Illinois Urbana-Champaign graduate student.