Science Notes

Science Notes are prepared by Dr. David Humphreys, emeritus professor of Chemistry at McMaster University in Hamilton, Ontario, Canada.

Retired from active teaching, Dr. Dave now maintains a busy speaking schedule, addressing both secular and Christian audiences on matters of science and faith. In Science Notes, he focusses on an interesting aspect of science, setting up a spiritual application written by Ron Hughes.

Features added chronologically with most recent at the top.

Monsters Taking over Earth

Talking with a Wag or a Smile

No Monopoly on Tool Making

Raindrops Keep Falling on My Head

Our Selective Senses

Unsung Heroes of the Night

Are We Going Up or Down?

The Brain Needs Rest and Stimulation

Choosing Your Hair Colour Through Chemistry

Sweeter Than Sugar

Science That Depends on Ignorance

Safer Tanning Through Chemistry

Why Can't We Cure Aids?

Don't Drop That Thermometer

Selective Memory Builds Folklore

Why Does it Always Happen to Me

Hidden Maths in Nature

You Have to Sweat It

Coffee in the Garden

Coffee Does More than Smell Good

Nice and Nasty in the Plant World

Where Have Those Warts Gone?

Don't Expect a Quick Reply

Boosting the Memory

I Feel So Embarrassed

Windy Days in Space

Surrounded By Junk

Making Yourself Invisible

The Salmon's Amazing Journey

What Guides Those Pigeons

The Dance of the Honey Bee

The Earth as a Magnet

Dormant Volcanoes Show Signs of Life

The Universe's Fine Tuning

What Did Einstein Do?

You've Probably Got a Virus

Make Sure You Have Your Shots

It's the Song That Attracts the Ladies

A Cell's Postal Code Ensures Delivery

Predicting Where Lightning is Likely to Strike

Competing with Machines

A Scientific Revolution

Just Where Am I?

Expecting the Impossible

Enjoy That Cup of Tea

Colour Blindness

Why Do I Get the Hiccups?

The Early Bird Catches the Words

A Famous Streaker

Wacky Ideas in Science

Scientific Heresy

Close Encounters of the Worst Kind

Effective Chemical Defence Systems

Your Busy  Chemistry  Laboratory

Battling Those Bugs

Life on Mars

Twinkle Twinkle Little Star

Red Sky at Night

Why is the Sky Dark at Night?

On the Tip of My Tongue

A Reliable Low Tech Word Processor

The World's Most Widely Used Drug

Tough But Sensitive

Chocolates That Bite Back

Hanging Around Home Pays Off

What Difference Does it Make

The Sun's Spotty Face

Stereoscopic Vision

Our Built in Air Conditioner

A Change For the Better

Hazards in a Tea Cup

El Nino and the World's Weather

My Ears and Toes are Cold

A Close Shave for Earth

20 20 Vision

Ring Around the Yolk

Science At Breakfast Time

Egg Shape is No Accident

Getting it Clean and White

Hard Bread and Soft Cookies

Where Does All That Dust Come From?

Can I Make Myself Laugh?

Acid Stomach

Dogs as Detectives

What Makes You Yawn

Edible Explosives

Motion Sickness

Timing a Turkey

Sunshine to Go

Winter Hazards

What is That Squeak I Hear?

Detergents Make Water Wetter

Why am I a Lefty?

Memories are Made of These

Insects Are Smart Chemists

Earthquakes

The Restless Earth

That Tastes Delicious

In Search of the Perfect Time Piece

Sporting a Mature Look

Hazards Around the House

Some Chemistry Really Does Stink

Onions are Nothing to Cry Over

Some Weights Don't Measure Up

Clinging in the Kitchen

Don't Stick in the Kitchen

What About Cholesterol

The Explosive Power of Chemicals

Bald and Distinguished

Where Did That Itch Come From?

The Ultimate One Way Ticket

Bacterial Resistance

The Power of a Pill

Why Can't We Live on Grass?

The Rhythm of Life

Tough Love Among the Insects

DNA Profiling

Are You Enjoying the Ride?

The Universal Speed Limit

What Steers the Waves

You Can't Get There From Here

The Disguises of Carbon

Physics on the Golf Course

Nature's Recycling Program

The Variety of Snowflakes

An Age-Old Search

What Is That Smell

Of Clocks and Calendars

What Makes You Unique?

The Wonder of Water