The smoothness of a ball’s surface is a critical factor in how a ball swerves, according to a new study. And if you know soccer (football) you know every year the ball in the World Cup is different - and invariably the source of complaints.

The World Cup 2014 is off to a roaring start - not a single 0-0 tie game - which is great for fans but terrifying for goalies. Yes, it's the ball. The “Jabulani” used at the 2010 World Cup was reviled while the new ball used at this year’s tournament in Brazil, the “Brazuca,” has a slightly rougher surface, and may be more predictable. The results so far still can't be making goalies happy.

The process of blood glucose control could improve dramatically with a bionic pancreas, according to a new study. Currently, people with type 1 diabetes maintain a constant vigil because their pancreas doesn't make the hormone insulin and so they need to manually insure that blood glucose levels don't get dangerously high and low. Several times a day they must use fingerstick tests to monitor their blood glucose levels and manually take insulin by injection or from a pump. 

Due in large part to the popularity of energy drinks and chain coffee shops, caffeine intake by children and adolescents has risen substantially - some drinks are marketed to children as young as four.

Unlike nicotine, caffeine has slipped under the cultural radar as a harmless drug, even for kids, but some research is happening. A new paper about a small study says that after puberty, boys and girls experience different heart rate and blood pressure changes after consuming caffeine. Girls also experience some differences in caffeine effect during their menstrual cycles. 

In time for Autistic Pride Day 18 June:

    Why do people congratulate somebody? Asperger’s sufferers often do not understand this. I asked myself:

  “I’ve won the lottery, so why additionally congratulate me? If congratulation is something positive, why give it to someone who has just been lucky already?”

Though mainstream journalism likes to link every bit of weather, even a deep freeze last winter, to global warming, the "Arctic amplification phenomenon" is unlikely to lead to more days of extreme cold, new research has shown.

The Arctic amplification phenomenon refers to the faster rate of warming in the Arctic compared to places further south. It is this phenomenon that has been linked to a spike in the number of severe cold spells experienced in recent years over Europe and North America.

New research by University of Exeter expert Dr James Screen has shown that Arctic amplification has actually reduced the risk of cold extremes across large swathes of the Northern Hemisphere.

Throughout Earth's geological history, there have been numerous warming and cooling phases. The last Ice Age only ended 11-12,000 years ago

The Antarctic Peninsula, the northern most region of Antarctica, is experiencing some dramatic changes, including population declines of some penguin species, but this is not the first time that region has felt the effects of climate warming.

How did penguins respond to the melting of snow and ice cover 11,000 years ago at the end of the last Ice Age?

Measuring variability of heart rate may identify premature infants at risk of developing necrotizing enterocolitis, a serious inflammatory condition that can lead to death, according to Penn State College of Medicine researchers.

Necrotizing enterocolitis, or NEC, may lead to destruction of the intestinal wall and vital organ failure. It affects 6 to 10 percent of premature infants within the first two weeks of life.

The hive mind is alive and well on Twitter.

Rather than being a participatory forum, an analysis of 290,119,348 tweets from 193,522 "politically engaged" Twitter users during the 2012 presidential campaign conventions and debates found little creative thinking. Instead, it was just retweeting "elites" like Bill Maher and Sean Hannity.

It doesn't happen often but there are times when its unclear if a football crosses the goal line for a touchdown. If a quarterback attempts a sneak, for example, and the line pushes forward, he may be under too many players to be seen.

All the referees can do is pull people off and look at where the ball is, though there is no idea if that's where it was when his knee touched the ground. A Disney Research team, in collaboration from NC State and Carnegie-Mellon, developed a system that can track a football in three-dimensional space using low-frequency magnetic fields.