That gooey cheese you see in pizza advertising is actually glue. That's probably not a surprise. Consumers understand that with choices, marketing matters. With over 20 food ads seen per day, educated people recognize that though organic food contains toxic pesticides their advertising will have images of produce weeded by hand on tiny plots, while fast food looks both huge and savory and is likewise disappointing in reality.

Less clear is why people think prettier food is actually healthier.

The first fossils of a duckbilled dinosaur have been discovered in Africa, which means dinosaurs must have crossed miles of open water to get there.

Ajnabia odysseus was found in Morocco and dates to the end of the Cretaceous, 66 million years ago. Ajnabia was a member of the duckbill dinosaurs, diverse plant-eating dinosaurs that grew up to 15 meters long. But the new dinosaur was tiny compared to its kin - at just 3 meters long, it was as big as a pony.

Only a few species, less than 0.1 percent, of parasitoid wasps enter water at all but now one in the family Braconidae, subfamily Microgastrinae, has been found to not only enter water but actually dive in order to attack and pull out caterpillar hosts, so that it can lay its eggs inside them before releasing them back in the water.

During research work in Japan, Dr. Jose Fernandez-Triana of the Canadian National Collection of Insects and colleagues found and filmed the first microgastrine parasitoid wasp to do so.

Since 2012, there have been increased calls for fossil fuel "divestment" - getting money out of fossil fuel companies. Despite an effort that peaked in 2015, spurred on by paid protesters from groups run by activists like Bill McKibben, they haven't made much difference.

Some schools and companies say they have done it, but like "sustainability" divestment has so many subjective meanings it is meaningless. 

If you're a music lover, you've likely had that feeling where a favorite song floods your system with pleasurable emotions, joyful memories, makes your hair stand on edge, or even sends a shiver or "chill" down your spine.

About half of people report that they get such chills when listening to music. 

Viral respiratory epidemics like the flu spike cyclically during autumn and winter - but only in the temperate regions of the globe's northern and southern hemispheres.

In the equatorial belt, they happen all year round, at lower levels.

A new numerical model hopes to provide insight. The authors find that both the prevalence and evolution of epidemics are strongly correlated with the amount of daily solar irradiation that hits a given location on the Earth at a given time of the year.