A Conifer That Thinks It's a Broadleaf Nearly all conifers are "evergreen" and keep their needles year round.  Why is the Larch an exception?  (2/18/2000)
Frozen Frogs Come to Life The Wood Frog becomes a frozen frogsicle in the winter.  How does it survive and revive in the spring? (3/31/2000)
Everybody Sings the Same Song Why is Nantucket an exception to the rule that Black-capped Chickadees all over sing the same song? (5/12/2000)
Flies That Love Humans How does a Black Fly find you and what you can do about it?  (6/9/2000)
To Grow or Not To Grow Why do some male Atlantic Salmon go to the ocean and grow, and others stay behind and stay small? (8/11/2000)
Long Live Flying Squirrels Why do Flying Squirrels live twice as long as they should? (10/13/2000)
Jellyfish in Fresh Water? When will they appear, and why are they all the same sex?  (12/15/2000)
Swarming Snow Fleas What are those tiny insect-like creatures and why are they out in winter?  (4/6/2000)
Dressed for Success Why is a male cardinal so shockingly red?  (5/18/2001)
Poisonous Mammals in Your Backyard Why is the Short-tailed Shrew poisonous, and why you don't have to worry about them.  (8/3/2001)
A Plant With a Way How does the Indian Pipe plant survive without chlorophyll? (10/19/2001)
Breathless Turtles How does a Painted Turtle survive under ice all winter without air? (3/29/2002)