"Field and Forest Facts"

A series of nature columns
provided by Dr. Paul H. Risk


Under each heading link is a summary of what will be discussed in the column.
To learn more about the author of the columns, click on the link above.



Summer Heat Index:

Summer heat can be more than miserable, it can kill.
The relationship between air temperature and relative humidity is call the Heat Index.
Heat stroke.
Heat exhaustion.
When temperatures are high, drink plenty of water.
Elderly people and young children most susceptible to heat illness.

Severe Weather Patterns:

How thunderstorms develop.
Thermal instability caused by solar heating.
Thunderstorm cloud may tower to 50,000 feet.
April, May and June are periods during which nature exhibits its power.

Spring Storms:

People underestimate strength and danger of a severe thunderstorm.
Very strong winds occur before and during thunderstorms.
Tornados.
Intense downpours and hail.
Lightning occurs in all thunderstorms.
Weather radio.

Lightning:

Giant spark that can leap as far as five miles.
How to tell how far away it is.
Lightning Safety.
LightningÕs Varied Forms and Signs.

Posion Ivy:

High in chemical allergen.
At its worst in spring.
Most People Are Allergic to Poison Ivy.
Poison Ivy Is Not Contagious or Spread by Scratching.
What To Do About It.

Skunks:

Scientific name, Mephitis mephitis, comes from a Latin word that means "poisonous vapor."
Nocturnal carnivores.
Fuzzy, warm blooded, 4-footed Mace cannister.
What do you do if you or your dog gets sprayed?

Venomous Spiders:

All spiders are poisonous and can bite.
Black Widow.
Brown Recluse.
Avoiding being bitten by black widows or brown recluse spiders.

Chiggers:

Chiggers are almost invisible reddish mite larvae.
DonÕt Burrow Into The Skin.
Chiggers Are Not Ticks.
Chigger Remedies.

Fire Ants:

First arrived at the port of Mobile, Alabama in the late 1930Õs.
Mounds may be two feet or more in diameter.
Sting produces immediate burning, fire-like pain.
Highly reactive people should see a doctor immediately.
Fire ants controls.

Fleas:

Common human companions.
Plague is found in various rodent populations.
Four stages in a flea's life cycle.
Control of fleas on pets.
Effective flea control.

Scorpions:

Found throughout Texas and in many other parts of the globe.
A prehistoric creature.
Relatives of spiders.
Sting is on its tail.
Stings Are Usually Not Serious.
Texas Scorpions Are Generally Over Rated.
Only One ÒDeadlyÓ Scorpion in Texas.



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