[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Have you ever heard the sound of frogs
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,calling at night?
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,For hundreds of millions of years,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,this croaking lullaby has filled the nighttime air.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,But recent studies suggest
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,that these frogs are in danger
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,of playing their final note.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Over the past few decades,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,amphibian populations have been rapidly disappearing worldwide.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Nearly one-third of the world's amphibian species
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,are endanger of extinction,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and over 100 species have already disappeared.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,But don't worry, there's still hope.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Before we get into how to save the frogs,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,let's start by taking a look
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,at why they're disappearing
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and why it's important to keep them around.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Habitat destruction is the number one problem
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,for frog populations around the world.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,There are seven billion humans on the planet,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and we compete with frogs for habitat.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,We build cities, suburbs, and farms
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,on top of frog habitat
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and chop forests
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and drain the wetlands
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,that serve as home
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,for numerous amphibian populations.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Climate change alters precipitation levels,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,drying up ponds, streams, and cloud forests.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,As the Earth's human population continues to grow,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,so will the threats amphibians face.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,There are a variety of other factors
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,contributing to the frogs' decline.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Over-harvesting for the pet and food trade
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,results in millions of frogs
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,being taken out of the wild each year.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Invasive species,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,such as non-native trout and crawfish,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,eat native frogs.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Humans are facilitating the spread
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,of infectious diseases
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,by shipping over 100 million amphibians
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,around the world each year,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,for use as food, pets, bait,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and in laboratories and zoos
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,with few regulations or quarantines.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,One of these diseases,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,chytridiomycosis,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,has driven stream-dwelling amphibian populations
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,to extinction
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,in Africa,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Australia,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Europe,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and North, Central, and South America.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,On top of all these problems,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,we add hundreds of millions of kilograms of pesticides
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,to our ecosystems each year.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,And these chemicals are easily absorbed
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,through amphibians' permeable skin,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,causing amino suppression,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,or a weakened immune system
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and developmental deformities.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Okay, so why are these little green guys
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,worth keeping around?
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Frogs are important for a multitude of reasons.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,They're an integral part of the food web,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,eating flies, ticks, mosquitoes,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and other disease vectors,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,thus, protecting us against malaria,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,dengue fever,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and other illnesses.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Tadpoles keep waterways clean
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,by feeding on algea,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,reducing the demand
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,on our community's filtration systems
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and keeping our cost of water low.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Frogs serve as a source of food
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,for birds, fish, snakes, dragonflies, and even monkies.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,When frogs disappear,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,the food web is disturbed,
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,and other animals can disappear as well.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Amphibians are also extremely important
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,in human medicine.
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,Over ten percent of the Nobel prizes
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,in physiology and medicine
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,have gone to researchers
Dialogue: 0,9:59:59.99,9:59:59.99,Default,,0000,0000,0000,,whose work depended on amphibians.