Part Time Scholar

A recent study on evolution is shining the spotlight on the three-toed Australian skink. When it comes to reproducing, some skinks are foregoing egg laying by giving birth to live youngs. Apparently, lizards living in the warm lowlands of New South Wales (NSW) are literally putting all their eggs in one basket, while their colder mountain dwelling neighbours are favouring live births. Various species of reptiles were known to have made such transitions in the past.  Not often do you catch them in action however.  What are the pros and cons of each reproduction method? Egg laying is a less taxing feat on the mother as she does not have to carry embryos. The caveat is a tantalizingly high mortality rate.  As for live births, the fetus has a shelter for development at the expense of the mother. This is certainly an interesting discovery, especially when the lizards are literally living in my backyard here in NSW! -PTS

New Zealand was a joy to visit as it offers many scenic natural wonders!  In fact, much of its beauty seem to have something to do with glaciers.  For one, the scenic Milford Sound and its surrounding cousins in South Island were carved by glaciers long ago. As you travel northwards from the sounds, you will be met by two actual glaciers in Fox and Franz Josef .  We joined a walking tour on Franz Josef, the bigger of the two brothers.  The tour was an intriguing experience and I decided to do some research upon returning. What Are Glaciers?  Glaciers are perennial masses of ice that moves over land. They form when precipitation accumulates faster than it disappears on the surface of a terrain (a.k.a. ablation). As layers of ice and snow build upon each other, the granular ice at the bottom fuses to form firn.  Glacial Types Alpine glaciers - form on mountain slopes.  Those that form on valleys are called  valley glaciers . Franz Josef is an alpine glacier. Ice sheets - are ice

Another great read called The World Without Us , this time on a best seller by Alan Weisman. This is a book that hypothesizes what would happen to Earth if mankind disappears overnight. It does not attempt to explain why and how humans can suddenly vanish.  Instead it tries to portray how cities and other man-made artifacts will collapse, in addition to how other lifeforms will adapt.  To illustrate its points, this piece utilizes vivid examples like the crumbling of New York City -- think Will Smith racing the red Camaro through a run-down and overgrown Times Square in  I Am Legend .  This publication has also inspired various TV series like  Life After People  on the History Channel.   Here are some interesting points: 1.    Our houses, built of the usual suspects (wood, clay, bricks), will fall easily to nature.  Their biggest enemy is water that seeps through the smallest cracks, thaws and freezes over time.  Although most roofs are waterproof, water can always find a way to rus

Here is an amazing footage taken by a tourist a few years ago at Kruger National Park in South Africa. A lion pride startled a buffalo herd, attacked and grabbed a calf near shore, only to be surprised by a sneaky crocodile. A tug of war then ensued and the lions claimed victory over the croc. However, the victors soon found themselves losers as the buffalo herd returned, fought off the lions and rescued the calf!  A whole show was produced by Nat Geo Wild based on this short film!  Here are some key points from the experts in the show: 1. Had the leading buffalo stood its ground, the lions might not have charged because the buffalo had numbers.  By turning and running, the herd immediately became prey. 2. The lions were well positioned nonetheless and attacked from three angles. 3. The lions tried to kill the calf by suffocating it. One lion bit its trachea, another its nostrils, but they did not get the job done. 4. The 600-pound croc battled against four 300-pound lions.