Video

Wasp 1: Huntsman spider 0

An epic journey played out on the basketball courts last week during sport. Having mastered his prey this valiant wasp dragged the much bigger huntsman spider across the full length of the basketball court to the relative safety of his (or her) hidey hole in a crack in the steps. This demonstration of the food web in action both concerned and fascinated students in my sports group. As well as protecting students from the wasp and vice versa I managed to video a small part of this epic journey.

 

Does hot water freeze faster than cold water?

Photo credit: Henry McIntosh/Unsplash

This question has been the basis of many a year 10 SRP and has baffled scientists for years. The Mpemba effect, which is often cited as an explanation is really more of an observation. Now a number of teams have published work investigating the Mpemba effect. Read more here:
http://www.sciencealert.com/the-centuries-old-claim-that-hot-water-freezes-faster-than-cold-just-got-even-weirder

Astounding Biology

According to LiveScience┬áthese slugs have found a surprising way to make sure they meet their nutritional needs. The green sea slug appears to be part animal, part plant. It’s the first animal discovered to produce chlorophyll the plant pigment needed for photosynthesis. The slugs seem to have taken the genes for chlorophyll production from algae that they’ve eaten. “This is the first time that multicellar animals have been able to produce chlorophyll,” Pierce told LiveScience.The sea slugs also steal tiny cell parts called chloroplasts, which they use to conduct photosynthesis. The chloroplasts use the chlorophyl to convert sunlight into energy, just as plants do, eliminating the need to eat food to gain energy. “We collect them and we keep them in aquaria for months,” Pierce said. “As long as we shine a light on them for 12 hours a day, they can survive [without food].”

https://www.livescience.com/6030-surprising-sea-slug-plant-animal.html