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In
this
lecture,
an
anthropologist
reveals
how
a
seven-million-year-old
skull
found
in
Chad,
Africa
in
the
summer
of
2002,
caused
many
long-held
scientific
beliefs
to
be
called
into
question.
Fossils
are
the
keys
scientists
use
to
unlock
the
mysteries
of
human
origins.
Skull
fossils
in
particular
hold
a
wealth
of
information.
By
examining
facial
features
and
skull
traits
of
a
creature,
researchers
...
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In
this
lecture,
an
ecologist
charts
the
social
and
ecological
histories
of
New
England
based
on
the
writings
of
Henry
David
Thoreau.
By
the
1840's,
when
Thoreau,
the
philosopher-author
of
Walden,
moved
to
the
Massachusetts
woods
and
erected
his
small
cabin,
New
England
had
already
been
transformed
into
a
patchwork
of
agricultural
fields
and
small
woodlots.
Indeed,
farmers
were
seen
as
heroes
for
...
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In
this
lecture,
an
expert
on
complex
systems
provides
an
overview
of
climate
change
and
air
pollution
issues
in
the
northeastern
United
States,
highlighting
several
important
environmental
factors
in
the
context
of
forest
health
and
productivity.
In
the
past,
each
of
these
environmental
factors
has
been
studied
individually
through
the
use
of
controlled
experiments,
though
the
fate
of
real
forests
...
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This resource references :
Global Climate Change: The Southern Ocean -
http:/
This resource references :
This resource references :
Global Climate Change: The Ross Ice Shelf -
http:/
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In
this
audio
lecture,
a
forest
ecologist
and
an
expert
in
complex
systems
explain
how
scientists
use
Earth-observing
satellites
to
track
and
assess
changes
in
the
forests
of
New
England.
These
scientists
present
an
overview
of
Earth-observing
remote
sensing
technologies
applications
as
well
as
some
of
their
own
work
as
part
of
the
White
Mountain
MAPBGC
(Mapping
and
Analysis
of
Productivity
and
BioGeochemical
...
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This
audio
lecture
features
scientists
who
examine
the
unusually
high
mortality
rate
of
sugar
maple
and
red
spruce
trees
as
a
means
of
illuminating
broader
issues
affecting
forests
of
the
Northeastern
United
States.
The
scientists
discuss
the
decline
of
these
species
and
whether
it
is
a
local
phenomenon,
or
if
it
is
indicative
of
larger
regional-scale
disturbances.
Data
is
presented
from
study
stands
...
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The
goal
of
this
audio
series
is
to
give
a
broad
yet
thorough
overview
of
Earth
systems
science
in
a
manner
that
is
both
educational
and
entertaining.
Broken
into
one-half
to
one-hour-long
audio
lectures,
the
series
covers
geology,
hydrology,
meteorology,
climatology,
biology,
ecology,
evolution,
and
Universal/
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Climate Watch is an audio series about Earth's atmosphere, climate change, and global warming organized around four areas: origins of climate, climate change, impacts of climate change, and action. Information is provided via the voices of scientists working in the atmospheric sciences.
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This
guided
tour
of
the
dinosaur
known
as
Dilophosaurus
is
narrated
by
the
discoverer
of
Dilophosaurus,
Sam
Welles,
formerly
a
professor
at
the
University
of
California
Museum
of
Paleontology
(UCMP).
Links
lead
to
Dr.
Wells'
description
of
the
discovery,
as
well
as
the
morphology
and
habits
of
the
creature.
He
also
compares
and
contrasts
the
real
animal
with
the
one
shown
in
the
movie
Jurassic
Park.
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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In
modern
organisms,
there
is
a
division
of
labor
between
two
kinds
of
molecule:
DNA,
which
stores
and
transmits
genetic
information,
and
proteins,
which
do
all
the
work.
They
are
connected
by
the
genetic
code,
whereby
DNA
specifies
what
kinds
of
proteins
can
be
made.
This
process
of
translation
is
well
understood,
but
it
is
far
too
complicated
to
have
arisen
by
chance
in
the
primitive
oceans.
This
...
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This
video
lecture
explores
the
chemistry
of
the
hordes
of
molecules
in
the
interstellar
medium
revealed
by
radioastronomical
observations
of
our
galaxy.
Extremely
fast
reactions
result
in
the
high
abundance
of
complex
organic
compounds
in
the
space
between
the
stars.
The
chemistry
of
the
interstellar
medium
illustrates
that
complex
synthesis
occurs
under
totally
abiotic
conditions.
The
specific
reactions
...
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