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9th Feb 2009

Crafty Caterpillars and Lost Fish


Ben Valsler
Pasture Day Moth Caterpillar, Apina callisto

On this weeks NewsFlash, we discover the caterpillar that tricks it's ant hosts into treating it like royalty, find out why fish get lost in acidic seas and why the gravitational pull of tonnes of ice may lead to greater sea level rise than predicted.  Plus, we explore the oldest evidence of complex life - a chemical signature in rocks up to 750 million years old.

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(c) Paolo Mazzei

Caterpillars kings of the mimics

Scientists from Oxford and Turin have found that certain species of caterpillars have developed the ability to use sounds to fool ants into accepting and nurturing them. Writing in this week's Science Francesca Barbero and her colleagues describe how they used sensitive microphones to eavesdrop on M...

(c) Image by Sprain

Nemo could get lost in acidic ocean

If you’ve seen the movie Finding Nemo, then you’ll know that Nemo the clown fish got lost and had to try and find his way back to his home reef.Now it seems that the Disney animators may have been onto something, because a study published in the journal PNAS led by Philip Munday from James Cook Univ...

(c) Marble

Gravity may make sea level rise worse

If the world is going to warm up then this is going to cause the sea level to rise. As water warms up it expands so it takes up more space and as ice on the continents melts it dumps more water into the oceans. Many models predict the melting of the west antarctic ice sheet which is predicted to pro...

(c) Thomasjst

A new urine test for heart disease

This week researchers have reported a new way of diagnosing whether someone is likely to develop coronary artery disease or CAD by testing the chemicals present in their urine.CAD is a major cause of death around the world and currently the only way to diagnose it is to conduct an angiogram, which i...


Interviews

(c) Albert Kok

Finding the Oldest Evidence of Life

Tell tale chemical evidence of sponges represents the earliest evidence of complex life - in rocks up to 750 million years old...




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