Wolves and foxes are closely related and share many of the same characteristics.

But look at their eyes – where wolves have rounded pupils like humans, foxes instead have a thin vertical line.

But it isn’t just canines –across the animal kingdom, pupils come in all shapes and sizes. So why the differences?

It’s a question that has long interested scientists working on vision and optics. In a new study published in the journal Science Advances, colleagues from Durham, Berkeley and I explain why these pupil shapes have developed.

Democrats (myself included) enjoy ridiculing Republicans who deny the scientific consensus behind climate change. But we then deny the inconvenient truth behind our own preferred climate policies: they will have regressive impacts on the poor and middle class.

The Energy Information Agency (EIA) projected in May that President Obama’s new Clean Power Plan (CPP) will lead to retail electricity prices 3%-7% higher for the nation as a whole in 2020-25, before falling to “near-baseline” levels in 2030. Yet speaking in the White House on August 3, the president denied the CPP would “cost you more money.”

Climate change mitigation could actually increase water shortage in some areas rather than reduce it, according to new research. The source of the problem is clear: greater demand for biofuels, intended to reduce emissions from fossil fuels, requires massive increases in irrigation in productive but relatively arid American farmland.

People associate wasps with memories of picnic invasions, BBQs under siege, and painful stings. There is a lot more to these much-maligned insects though, and with more than 100,000 different species, their life histories range from the quietly unobtrusive to the bizarre and gruesome. A new study in the Journal of Experimental Biology documents one such disturbing example of wasp larvae that takes control of their unfortunate spider hosts.

Until the early 1900s, scholars took it for granted that they could draw on any area of knowledge to inform their thinking on the major questions of the day. Medieval polymaths such as Hildegard of Bingen (medicine, linguistics, botany, art, philosophy and music) opened the door to Victorian scholars such as Temple Chevallier (astronomy, theology and maths) and Thomas Young (medicine, physics, music and Egyptology).

Most of us would choose to experience pleasure – however we may define it – as often as possible. The public health and criminal justice systems are set up by the government partly to shape how, when and where we find pleasure, so that we balance our enjoyment with working and paying taxes.